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PsychotherapyforMilitary-RelatedPTSDAReviewofRandomizedClinicalTrials
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Copyright 2015 American Medical Association. All rights reserved.
Psychotherapy for Military-Related PTSDA Review of Randomized Clinical TrialsMaria M. Steenkamp, PhD; Brett T. Litz, PhD; Charles W. Hoge, MD; Charles R. Marmar, MD
IMPORTANCE Posttraumatic stress disorder (PTSD) is a disabling psychiatric disordercommon among military personnel and veterans. First-line psychotherapies most oftenrecommended for PTSD consist mainly of “trauma-focused” psychotherapies that involvefocusing on details of the trauma or associated cognitive and emotional effects.
OBJECTIVE To examine the effectiveness of psychotherapies for PTSD in military and veteranpopulations.
EVIDENCE REVIEW PubMed, PsycINFO, and PILOTS were searched for randomized clinicaltrials (RCTs) of individual and group psychotherapies for PTSD in military personnel andveterans, published from January 1980 to March 1, 2015. We also searched reference lists ofarticles, selected reviews, and meta-analyses. Of 891 publications initially identified, 36 wereincluded.
FINDINGS Two trauma-focused therapies, cognitive processing therapy (CPT) and prolongedexposure, have been the most frequently studied psychotherapies for military-related PTSD.Five RCTs of CPT (that included 481 patients) and 4 RCTs of prolonged exposure (thatincluded 402 patients) met inclusion criteria. Focusing on intent-to-treat outcomes,within-group posttreatment effect sizes for CPT and prolonged exposure were large (Cohen drange, 0.78-1.10). CPT and prolonged exposure also outperformed waitlist andtreatment-as-usual control conditions. Forty-nine percent to 70% of participants receivingCPT and prolonged exposure attained clinically meaningful symptom improvement (definedas a 10- to 12-point decrease in interviewer-assessed or self-reported symptoms). However,mean posttreatment scores for CPT and prolonged exposure remained at or above clinicalcriteria for PTSD, and approximately two-thirds of patients receiving CPT or prolongedexposure retained their PTSD diagnosis after treatment (range, 60%-72%). CPT andprolonged exposure were marginally superior compared with non–trauma-focusedpsychotherapy comparison conditions.
CONCLUSIONS AND RELEVANCE In military and veteran populations, trials of the first-linetrauma-focused interventions CPT and prolonged exposure have shown clinically meaningfulimprovements for many patients with PTSD. However, nonresponse rates have been high,many patients continue to have symptoms, and trauma-focused interventions showmarginally superior results compared with active control conditions. There is a need forimprovement in existing PTSD treatments and for development and testing of novelevidence-based treatments, both trauma-focused and non–trauma-focused.
JAMA. 2015;314(5):489-500. doi:10.1001/jama.2015.8370
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Author Affiliations: Steven andAlexandra Cohen Veterans Center forPosttraumatic Stress and TraumaticBrain Injury, New York UniversityLangone School of Medicine,New York, New York (Steenkamp,Marmar); VA Boston HealthcareSystem, Massachusetts VeteransEpidemiological Research andInformation Center (MAVERIC),Boston University School ofMedicine, Boston (Litz); Walter ReedArmy Institute of Research,Silver Spring, Maryland (Hoge).
Corresponding Author: Maria M.Steenkamp, PhD, Steven andAlexandra Cohen VeteransCenter for Posttraumatic Stressand Traumatic Brain Injury,New York University LangoneSchool of Medicine,One Park Ave, Room 8-107,New York, NY 10016([email protected]).
Section Editor: Mary McGraeMcDermott, MD, Senior Editor.
Clinical Review & Education
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P osttraumatic stress disorder (PTSD) is a disabling psychiat-ric condition common among military personnel and vet-erans, and consequently, a significant public health chal-
lenge. Approximately 13% of Iraq or Afghanistan veterans1 and10% of Gulf War veterans who experienced combat have PTSD,2
and 11% of Vietnam veterans continue to report PTSD symptomsthat impair functioning 40 years after the war.3 Military-relatedPTSD is often accompanied by a variety of mental and physicalhealth conditions, particularly depression, anxiety, and substancemisuse.4,5 War veterans with PTSD also have extensive functionalimpairments such as unemployment and income disparities,6 fam-ily and relationship difficulties,7 aggressive behavior,8 and poorquality of life.9 Twenty-three percent of Vietnam veterans withPTSD (compared with 4% among those without PTSD) reportedbeing unemployed when assessed 15 or more years after service,33% (compared with 16%) reported perpetrating serious interper-sonal violence in the past year, and 40% (compared with 10%)reported low well-being.10 Risk factors for PTSD in military popula-tions include war zone exposure, being wounded, younger agewhen deployed, less education, greater exposure to childhoodtrauma, and less social support during and after deployment.11 Ifleft untreated, military-related PTSD often follows a chroniccourse, resulting in lifelong dysfunction.12
Over the past 10 years, an increasing number of randomizedclinical trials (RCTs) of PTSD treatments in military personnel and vet-erans have emerged, coinciding with a major policy shift in the De-partments of Defense (DoD) and Veterans Affairs (VA) toward thera-pies considered evidence-based.13 Psychotherapy is moreconsistently recommended as first-line treatment for PTSD thanmedications across clinical practice guidelines and in DoD and VApractice settings. In this review, we focus on RCTs of individual andgroup psychotherapies for PTSD in military and veteran popula-tions to examine the degree of symptom improvement and effi-cacy relative to control conditions.
MethodsWe searched PubMed, PsycINFO, and PILOTS for RCTs of psycho-therapy for PTSD among military personnel or veterans, pub-lished from January 1980 (the year the PTSD diagnosis was firstintroduced) to March 1, 2015. PTSD was defined according to thediagnostic criteria accepted at the time of the RCTs, which mostoften followed the Diagnostic and Statistical Manual for MentalDisorders (Fourth Edition, Text Revision).14 This definitionincluded 3 clusters of symptoms following trauma, present for atleast 1 month, including reexperiencing the trauma (eg, intrusivethoughts or nightmares), avoiding reminders of the trauma, andhyperarousal (eg, hypervigilance, irritability, difficulty concentrat-ing). We also manually searched reference lists of articles,selected reviews, and meta-analyses.
We selected only English-language RCTs that (1) were con-ducted with service members, veterans, or both; (2) reported PTSDas an inclusion criterion; (3) reported at least pretreatment and post-treatment total scores on standardized PTSD clinical measures;(4) used either individual or group psychotherapy; and (5) did notsolely involve pharmacotherapies, pharmacologically augmentedpsychotherapy, or other biological treatments. We did not include
trials of collaborative care models, dosing studies, trials targeting spe-cific symptoms (eg, insomnia, anger) rather than the full syn-drome, or trials targeting substance use disorders comorbid withPTSD. We focused on intent-to-treat outcomes, when available.
ResultsOf 891 publications initially identif ied, 36 were included(Table 115-27,29,58 and Table 230-50; eFigure in the Supplement). Wegrouped trials of the most commonly studied first-line trauma-focused therapies (ie, therapies given the highest evidence recom-mendations in clinical guidelines) (Table 1), followed by second-lineinterventions (ie, therapies for which there is less evidence sup-porting effectiveness) (Table 2). The principal efficacy criteria,reported variably in published trials, included degree of clinicallysignificant PTSD symptom improvement (typically defined as a 10-or 12-point decline in self-reported or interviewer-assessed PTSDsymptoms),23 mean PTSD symptom level at posttreatment andfollow-up, loss of PTSD diagnosis, degree of symptom remission,and effect sizes (most commonly Cohen d, calculated as the differ-ence between 2 mean PTSD severity scores divided by the pooledSD [a d of 0.20 indicates a small effect size; a d of 0.50, a mediumeffect size; and a d of 0.80, a large effect size]).
First-Line PsychotherapiesThe diverse range of PTSD psychotherapies are broadly groupedinto “trauma-focused” and non–trauma-focused. Trauma-focusedtherapies are cognitive-behavioral treatments that involve a rangeof techniques that attend to the details of the trauma or associatedemotions or cognitive processes (beliefs, assumptions). The 3 mostwidely studied trauma-focused therapies, which are consideredleading evidence-based psychotherapies by all major clinicalguidelines,51 are cognitive processing therapy (CPT), prolongedexposure therapy, and eye movement desensitization and repro-cessing (EMDR) therapy (Box). All are manualized (ie, protocolizedin a session-by-session manner), delivered principally in specialtycare settings, use different techniques and theoretical rationales,require sustained engagement (typically 12 sessions), and can beemotionally demanding for patients. Prolonged exposure includesasking patients to repeatedly recount the trauma to extinguish fearresponses associated with the memory (a technique known as ima-ginal exposure) and to practice facing trauma reminders and trig-gers in the real world (known as in vivo exposure). CPT involveschanging maladaptive beliefs related to the trauma (known as cog-nitive restructuring), with the option of writing an account of thetrauma. EMDR also comprises exposure and cognitive restructuringelements but asks patients to maintain dual focus on an externalstimulus (eg, eye-movement tracking of therapist hand move-ments) while thinking about the trauma.
Meta-analyses of mostly civilian studies show large pre-posttreatment effects (within-group) and between-group effects com-pared with control conditions for these treatments, with generallycomparable outcomes for CPT, prolonged exposure, EMDR, andother trauma-focused modalities.52 In contrast, non–trauma-focused therapies attend principally to current life stressors, reac-tions, goals, or relationships. The only non–trauma-focused therapythat has received high-level evidence statements in PTSD clinical
Clinical Review & Education Review Psychotherapy for Military-Related PTSD
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Tabl
e1.
Sum
mar
yof
Out
com
esFr
omRC
Tsof
Firs
t-Li
neIn
terv
entio
nsfo
rMili
tary
-Rel
ated
PTSD
Sour
cePa
rtic
ipan
ts(N
o.)
Cond
ition
sLo
nges
tFo
llow
-up,
mo
No.
(%)
Mea
nPo
sttr
eatm
ent
Tota
lPTS
DSc
ore
Pre-
Post
Decr
ease
inPT
SDSy
mpt
oms
No.
(%)
Betw
een-
Grou
pES
(95%
CI)F
rom
Pret
reat
men
tto
Post
trea
tmen
tDr
opO
utRe
mis
sion
atPo
st-T
reat
men
t
%At
tain
ing
Clin
ical
lyM
eani
ngfu
lCha
nge
atPo
sttr
eatm
ent
%Re
tain
ing
PTSD
Diag
nosi
sat
Post
trea
tmen
tCP
T
Mon
son
etal
,15
2006
Vete
rans
(30)
CPT
16
(20)
NR52
.14
(CAP
SIT
T)24
.59
(CAP
SIT
T)15
(50)
(CAP
SIT
T)18
(60)
(CAP
SIT
T)g
=1.
12(−
0.58
to1.
67)
(CAP
SIT
T)Ve
tera
ns(3
0)W
aitli
st1
4(1
3)NR
76.0
3(C
APS
ITT)
3.07
(CAP
SIT
T)3
(10)
(CAP
SIT
T)29
(97)
(CAP
SIT
T)Fo
rbes
etal
,16
2012
Aust
ralia
nve
tera
ns(3
0)CP
T3
9(3
0)6
(27)
(CAP
SIT
T)48
.03
(CAP
SIT
T)27
.5(C
APS
ITT)
16(6
7)(C
APS
ITT)
15(6
3)(C
APS
com
plet
er)
d=
0.97
(0.4
3to
1.51
)Au
stra
lian
vete
rans
(29)
TAU
39
(31)
1(3
)CAP
SITT
57.7
3(C
APS
ITT)
6.82
(CAP
SIT
T)8
(35)
(CAP
SIT
T)20
(87)
(CAP
Sco
mpl
eter
)Su
ríset
al,1
7
2013
Vete
rans
with
mili
tary
sexu
altr
aum
a(7
2)CP
T6
18(3
5)NR
64.9
7(C
APS
ITT)
20.1
(CAP
SIT
T)66
%(C
APS
ITT)
72%
(CAP
SIT
T)d
=0.
49(0
.22
to−0
.76)
(CAP
SIT
T)Ve
tera
nsw
ithm
ilita
ryse
xual
trau
ma
(57)
PCT
66
(18)
NR68
.64
(CAP
SIT
T)15
.17
(CAP
SIT
T)48
%(C
APS
ITT)
74%
(CAP
SIT
T)M
orla
ndet
al,1
8
2014
Vete
rans
(61)
Grou
pCP
T-C
via
tele
med
icin
e6
10(1
6)NR
58.7
(CAP
SIT
T)10
.2(C
APS
ITT)
71(5
7)ov
eral
l(C
APS
ITT)
89(7
1)ov
eral
l(C
APS
ITT)
d=
0.27
(CAP
SIT
T)Ve
tera
ns(6
4)Gr
oup
CPT-
Cin
pers
on6
8(1
3)NR
55.6
(CAP
SIT
T)16
.4(C
APS
ITT)
71(5
7)ov
eral
l(C
APS
ITT)
89(7
1)ov
eral
l(C
APS
ITT)
Resi
cket
al,1
9
2015
Activ
edu
tyso
ldie
rs(5
6)Gr
oup
CPT-
C12
15(2
7)NR
23.0
(PSS
I)4.
7(P
SSI)
15(4
9)(P
CL)
NRd
=0.
21(P
SSI)
Activ
edu
tyso
ldie
rs(5
2)Gr
oup
PCT
127
(13)
NR23
.9(P
SSI)
3.2
(PSS
I)14
(34)
(PCL
)NR
Prol
onge
dEx
posu
re,I
mag
inal
Expo
sure
,and
Grou
pEx
posu
re
Coop
er&
Klum
,20
1989
Vete
rans
(8)
TAU
+im
plos
ive
ther
apy/
flood
ing
36
(27)
over
all
NRNR
NRNR
NR
NRVe
tera
ns(8
)TA
U3
6(2
7)ov
eral
lNR
NRNR
NRNR
Kean
eet
al,2
1
1989
Viet
nam
vete
rans
(11)
Impl
osiv
eth
erap
y6
NRNR
NRNR
NRNR
NRVi
etna
mve
tera
ns(1
3)W
aitli
st6
NRNR
NRNR
NRNR
Boud
ewyn
s&Hy
er,2
219
90In
patie
ntve
tera
ns(1
9)Ex
posu
re3
13(2
5)ov
eral
lNR
NRNR
NRNR
NRIn
patie
ntve
tera
ns(1
9)TA
U3
13(2
5)ov
eral
lNR
NRNR
NRNR
Schn
urre
tal,2
3
2003
Vete
rans
(180
)Gr
oup
expo
sure
1241
(23)
NR74
.00
(CAP
SIT
T)6.
41(C
APS
ITT)
39%
(CAP
SIT
T)NR
NRVe
tera
ns(1
80)
Grou
pPC
T12
16(9
)NR
76.0
3(C
APS
ITT)
5.98
(CAP
SIT
T)38
%(C
APS
ITT)
NR
(con
tinue
d)
Psychotherapy for Military-Related PTSD Review Clinical Review & Education
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Tabl
e1.
Sum
mar
yof
Out
com
esFr
omRC
Tsof
Firs
t-Li
neIn
terv
entio
nsfo
rMili
tary
-Rel
ated
PTSD
(con
tinue
d)
Sour
cePa
rtic
ipan
ts(N
o.)
Cond
ition
sLo
nges
tFo
llow
-up,
mo
No.
(%)
Mea
nPo
sttr
eatm
ent
Tota
lPTS
DSc
ore
Pre-
Post
Decr
ease
inPT
SDSy
mpt
oms
No.
(%)
Betw
een-
Grou
pES
(95%
CI)F
rom
Pret
reat
men
tto
Post
trea
tmen
tDr
opO
utRe
mis
sion
atPo
st-T
reat
men
t
%At
tain
ing
Clin
ical
lyM
eani
ngfu
lCha
nge
atPo
sttr
eatm
ent
%Re
tain
ing
PTSD
Diag
nosi
sat
Post
trea
tmen
tSc
hnur
reta
l,24
2007
Fem
ale
vete
rans
prim
arily
with
sexu
altr
aum
a(1
41)
PE6
53(3
8)24
(17)
52.9
(47.
7to
58.0
)(C
APS
ITT)
24.7
(CAP
SIT
T)99
(70)
(CAP
SIT
T)86
(61)
(CAP
SIT
T)
d=
0.27
CAPS
ITT
Fem
ale
vete
rans
prim
arily
with
sexu
altr
aum
a(1
43)
PCT
630
(21)
10(7
)60
.1(5
5.3
to64
.8)
(CAP
SIT
T)17
.8(C
APS
ITT)
84(5
9)(C
APS
ITT)
114
(80)
(CAP
SIT
T)
Naca
sch
etal
,25
2011
Isra
elis
urvi
vors
ofco
mba
tort
erro
rism
(15)
PE12
2(1
3)NR
18.9
(PSS
IITT
)18
.2(P
SSII
TT)
NRNR
d=
1.80
PSSI
ITT
Isra
elis
urvi
vors
ofco
mba
tort
erro
rism
(15)
TAU
122
(13)
NR35
.0(P
SSII
TT)
1.8
(PSS
IITT
)NR
NR
Yehu
daet
al,2
6
2014
Vete
rans
(37)
PE3
12(3
1)NR
NR23 (C
APS)
NR14
(56)
(CAP
Sco
mpl
eter
)NR
Vete
rans
(15)
Min
imal
atte
ntio
n3
3(2
1)NR
NR14 (C
APS)
NR10
(83)
(CAP
Sco
mpl
eter
)Ra
uch
etal
,27
2015
Vete
rans
(18)
PENo
ne7
(39)
NR30
.0(C
APS
com
plet
er)
49.2
(CAP
Sco
mpl
eter
)10
(91)
(CAP
Sco
mpl
eter
)NR
d=
0.98
CAPS
com
plet
erVe
tera
ns(1
8)PC
TNo
ne3
(17)
NR53
.6(C
APS
com
plet
er)
23.8
(CAP
Sco
mpl
eter
)9
(60)
(CAP
Sco
mpl
eter
)NR
EMDR
Boud
ewyn
s&Hy
er,5
819
96Ve
tera
ns(2
1)EM
DRNo
neNR
NR50
.09
(CAP
S)25
.14
(CAP
S)NR
NR
NRVe
tera
ns(1
8)EM
DRw
ithou
tey
em
ovem
ent
None
NRNR
67.5
0(C
APS)
18.1
(CAP
S)NR
NR
Vete
rans
(22)
TAU
None
NRNR
67.1
8(C
APS)
14.0
5(C
APS)
NRNR
Carls
onet
al,2
9
1998
Vete
rans
(10)
EMDR
30
NRNR
NRNR
2(2
2)
NR
Vete
rans
(13)
Biof
eedb
ack
rela
xatio
n3
1(3
)NR
NRNR
NR7
(78)
Vete
rans
(12)
Rout
ine
care
30 12
(26)
over
allp
rior
togr
oup
assi
gnm
ent
NRNR
NRNR
NR
Abbr
evia
tions
:CAP
S,Cl
inic
ian
Adm
inist
ered
PTSD
Scal
e;co
mpl
eter
,tre
atm
entc
ompl
eter
sam
ple
only
;CP
T,co
gniti
vepr
oces
sing
ther
apy;
CPT-
C,CP
Tco
gniti
ve-o
nly
vers
ion;
EMD
R,ey
em
ovem
entd
esen
sitiz
atio
nan
dre
proc
essin
g;ES
,effe
ctsiz
e;IT
T,in
tent
-to-
trea
t;N
R,no
trep
orte
d;PC
L,PT
SDCh
eckl
ist;P
CT,p
rese
nt-c
ente
red
ther
apy;
PSSI
,PTS
DSy
mpt
omSc
ale
Inte
rvie
w;P
TSD,
post
trau
mat
icst
ress
diso
rder
;RCT
,ran
dom
ized
clin
ical
tria
l;TA
U,tr
eatm
enta
susu
al.
Clinical Review & Education Review Psychotherapy for Military-Related PTSD
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practice guidelines is stress inoculation training, which involves stressmanagement skills (eg, breathing, muscle relaxation) and applyingthese skills to day-to-day stressors and reminders of the trauma.
In 2008, CPT and prolonged exposure were selected by the VAfor nationwide dissemination in an attempt to better standardize carefor veterans, and 98% of VA centers now offer both.53,54 Initially,neither intervention was validated sufficiently in active duty mili-tary or veteran populations; they were originally tested largely in ci-vilian female survivors of sexual assault. EMDR has not been dis-seminated within the VA and DoD, and EMDR research has receivedcomparatively little VA or DoD funding but has strong evidence incivilian studies and high-level endorsement from many guidelinesinternationally. RCTs of stress inoculation training are lacking in vet-erans, and it is infrequently used in the VA and DoD.
Efficacy of CPTFive trials of CPT (that included 481 patients) met inclusion crite-ria; 4 enrolled veterans15-18 and 1 enrolled active-duty soldiers.19
The first included a waitlist comparison,15 and subsequent studiesused either a treatment-as-usual comparison or an active com-parison condition known as present-centered therapy, a non–trauma-focused treatment protocol focused largely on current lifeproblems. One noninferiority trial compared group CPT deliveredin person vs via telemedicine.18 Treatment dropout rates rangedfrom 16% to 35%.
Within-group intent-to-treat effect sizes for CPT werereported in 3 trials and were large (d = 0.78,18 d = 1.10,19 andd = 1.0217). All trials reported the percentage of patients attainingmeaningful symptom change (49%-67%), and the mean posttreat-ment PTSD scores, which remained at or above clinical cutoffs (eg,50 on the Clinician Administered PTSD Scale [CAPS] and 20 on thePTSD Scale-Interview [PSSI]), with a range of 48.03 to 64.97 forCAPS and 23.00 for PSSI. Four trials reported posttreatment PTSDdiagnosis,15-18 with approximately two-thirds of patients retainingtheir diagnosis (60%-72%). Only 1 trial reported symptom remis-sion (CAPS score <20) of 27%.16
Concerning comparisons to control conditions, CPT outper-formed waitlist approaches for mean PTSD symptom reduction(g = 1.12), loss of diagnosis, and meaningful symptom change, al-though the latter was no longer statistically significant by 1 monthposttreatment.15 CPT produced significantly greater symptom re-mission and clinically meaningful symptom improvement than treat-ment as usual in a study of Australian veterans (d = 0.97). Group dif-ferences in loss of diagnosis and meaningful symptom improvementwere nonsignificant at 3-month follow-up but remained significantfor symptom remission.16 In a trial comparing CPT and present-centered therapy for military sexual trauma, CPT resulted in signifi-cantly greater reduction in self-reported PTSD symptoms at post-treatment (d = 0.85), although group differences were no longersignificant by 2-, 4-, or 6-month follow-up.17 There were no signifi-cant group differences in interviewer-assessed PTSD symptoms. Atrial comparing group CPT with group present-centered therapy inactive-duty soldiers also found that self-reported PTSD symptomsimproved in both groups but statistically significantly more so in theCPT group (d = 0.40).19 Between-group differences were small andnot significant for interviewer-assessed PTSD symptoms at post-treatment (d = 0.21), 6-month (d = 0.22), and 12-month (d = 0.21)follow-up. There were no significant differences between groups in
the percentage of patients attaining clinically significant change inself-reported symptoms at posttreatment, 6-month, or 12-monthfollow-up.
In sum, trials of CPT for military-related PTSD have included bothveterans and active-duty personnel with combat or military sexualtrauma, have shown high methodological rigor (although fidelityproblems were present in 1 trial),17 and have had large effect sizeswhen compared with no treatment (waitlist) or treatment as usual.However, CPT was marginally superior to active, non–trauma-focused control comparisons.
Efficacy of Prolonged ExposureFour RCTs of prolonged exposure (that included 402 patients) metinclusion criteria.24-27 Earlier trials examined similar exposure-based mechanisms but not the full prolonged exposure protocol20-22
and included a large trial of an exposure-based group therapy thatdid not lead to meaningful PTSD symptom reduction or outper-form a present-centered control.23 The most robust trial of pro-longed exposure compared prolonged exposure with present-centered therapy in female veterans with sexual trauma,24 while 3small studies of combat veterans used minimal attention,26 treat-ment as usual,25 or present-centered therapy27 control conditions.Two of these trials26,27 focused primarily on glucocorticoid-relatedbiomarker responses associated with clinical improvement. Treat-ment dropout rates ranged from 13% to 39%.
Within-group intent-to-treat effect size for prolonged expo-sure was reported in 1 trial and was large (d = 0.80).24 One trialreported on clinically meaningful PTSD symptom reduction in theintent-to-treat sample, which occurred in 70% of patients.24
Mean posttreatment intent-to-treat symptom scores werereported in 2 trials and remained at or above clinical cutoffs forPTSD (52.9 [CAPS]24 and 18.9 [PSSI]25). One trial reported loss ofdiagnosis in the intent-to-treat sample and found that 61%retained their diagnosis after treatment.24 The only trial to reportremission (�20 CAPS) found remission in 17% of the intent-to-treat sample.24
When compared with control conditions, both prolonged ex-posure and present-centered therapy improved symptoms in fe-male veterans with predominantly sexual assault trauma, with a smallintent-to-treat effect size favoring prolonged exposure (d = 0.27);there were no significant group differences for clinically meaning-ful improvement at any point and no significant group differencesfor loss of diagnosis or symptom remission at either the 3- or 6-monthfollow-up.24 In a small sample of Israeli veterans, prolonged expo-sure resulted in greater symptom reduction than psychodynamictherapy (d = 1.80), and outcomes were maintained through 12-month follow-up.25 Prolonged exposure failed to outperform a mini-mal-attention control that consisted of 30-minute weekly symp-tom monitoring phone calls; both groups significantly improved, withno significant group differences.26 Last, a small RCT examining cor-tisol response following prolonged exposure found no significant dif-ferences between prolonged exposure and present-centeredtherapy on interviewer-assessed PTSD outcomes in the intent-to-treat sample, although significant differences favoring prolonged ex-posure were found in completers (d = 3.16 for prolonged exposurevs d = 1.08 for present-centered therapy).27
In sum, fewer methodologically robust trials for military-related PTSD are available for prolonged exposure than for CPT. With
Psychotherapy for Military-Related PTSD Review Clinical Review & Education
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Copyright 2015 American Medical Association. All rights reserved.
Tabl
e2.
Sum
mar
yof
Out
com
esFr
omRC
Tsof
Seco
nd-L
ine
Inte
rven
tions
forM
ilita
ry-R
elat
edPT
SD
Sour
cePa
rtic
ipan
ts(N
o.)
Cond
ition
sLo
nges
tFo
llow
-up,
mo
No.
(%)
Mea
nPo
st-T
reat
men
tTo
talP
TSD
Scor
ePr
e-Po
stDr
opin
PTSD
Sym
ptom
s
No.
(%)
Betw
een-
Grou
pES
From
Pret
reat
men
tto
Post
trea
tmen
tDr
opO
utRe
mis
sion
atPo
st-T
reat
men
t
%At
tain
ing
Clin
ical
lyM
eani
ngfu
lCha
nge
AtPo
sttr
eatm
ent
%Re
tain
ing
PTSD
Diag
nosi
sat
Post
trea
tmen
t
Wat
son
etal
,30
1997
Viet
nam
vete
rans
(30)
Rela
xatio
nNo
neNR
NR95
.0(P
TSD-
Icom
plet
er)
0.4
(PTS
D-Ic
ompl
eter
)NR
NR
NRVi
etna
mve
tera
ns(3
0)Re
laxa
tion
+de
epbr
eath
ing
None
NRNR
97.8
(PTS
D-Ic
ompl
eter
)0.
3(P
TSD-
Icom
plet
er)
NRNR
Viet
nam
vete
rans
(30)
Rela
xatio
n+
deep
brea
thin
g+
biof
eedb
ack
None
NRNR
89.4
(PTS
D-Ic
ompl
eter
)1.
1(P
TSD-
Icom
plet
er)
NRNR
Dunn
etal
,31
2007
Vete
rans
(55)
Self-
man
agem
ent
ther
apy
1217
(33)
NR73
.93
(CAP
Sco
mpl
eter
)2.
01(C
APS
com
plet
er)
NRNR
d=
0.23
Vete
rans
(56)
Psyc
hoed
ucat
ion
grou
pth
erap
y12
6(1
2)NR
77.1
0(C
APS
com
plet
er)
+1.0
5(C
APS
com
plet
er)
NRNR
Frue
het
al,3
2
2007
Vete
rans
(21)
In-p
erso
ngr
oup
CBT
39
(43)
NR56
.58
(PCL
com
plet
er)
5.8
(PCL
com
plet
er)
NRNR
NRVe
tera
ns(1
7)Te
leps
ychi
atry
grou
pCB
T3
8(4
7)NR
68.1
1(P
CLco
mpl
eter
)+1
.11
(PCL
com
plet
er)
NRNR
Litz
etal
,33
2007
Activ
edu
type
rson
nel(
24)
Inte
rnet
CBT
612
(27)
over
all
7(4
2.9)
(PSS
-I<6
)14
.86
(PSS
-Ico
mpl
eter
)9.
16(P
SSco
mpl
eter
)NR
NR
d=
0.41
Activ
edu
type
rson
nel(
21)
Inte
rnet
supp
ortiv
eco
unse
ling
612
(27)
over
all
1(6
.3)(
PSS-
I<6)
20.0
0(P
SS-I
com
plet
er)
11.8
5(P
SS-I
com
plet
er)
NRNR
Borm
ann
etal
,34
2008
Vete
rans
(14)
Man
tram
repe
titio
nNo
ne4
(12)
over
all
NRNR
4.79
(CAP
SIT
T)NR
NR
d=
0.33
Vete
rans
(15)
Wai
tlist
None
NRNR
2.64
(CAP
SIT
T)NR
NR
Land
eet
al,3
520
10Ac
tive
duty
sold
iers
(22)
Biof
eedb
ack
+TA
UNo
neNR
NRNR
NRNR
NR
NRAc
tive
duty
sold
iers
(17)
TAU
None
NRNR
NRNR
NRNR
Read
yet
al,3
620
10Vi
etna
mve
tera
ns(6
)Vi
rtua
lrea
lity
expo
sure
61
(17)
NR59
.20
(CAP
Sco
mpl
eter
)31
.8(C
APS
com
plet
er)
NRNR
d=
0.28
Viet
nam
vete
rans
(5)
PCT
61
(20)
NR75
.50
(CAP
Sco
mpl
eter
)23
.0(C
APS
com
plet
er)
NRNR
Beid
elet
al,3
720
11Vi
etna
mve
tera
ns(1
4)Tr
aum
am
anag
emen
tth
erap
yNo
ne5
(14)
over
all
NR69
.0(C
APS
com
plet
er)
15.9
(CAP
Sco
mpl
eter
)NR
NR
NRVi
etna
mve
tera
ns(1
6)Ex
posu
reth
erap
yNo
neNR
65.5
(CAP
Sco
mpl
eter
)25
.1(C
APS
com
plet
er)
NRNR
Kent
etal
,38
2011
Vete
rans
(20)
Resi
lienc
e-or
ient
edgr
oup
ther
apy
None
1(5
)NR
23.0
0(P
DSIT
T)12
.90
(PDS
ITT)
NRNR
d=
1.40
Vete
rans
(19)
Wai
tlist
None
2(1
1)36
.90
(PDS
ITT)
0.63
(PDS
ITT)
NRNR
(con
tinue
d)
Clinical Review & Education Review Psychotherapy for Military-Related PTSD
494 JAMA August 4, 2015 Volume 314, Number 5 (Reprinted) jama.com
Copyright 2015 American Medical Association. All rights reserved.
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Copyright 2015 American Medical Association. All rights reserved.
Tabl
e2.
Sum
mar
yof
Out
com
esFr
omRC
Tsof
Seco
nd-L
ine
Inte
rven
tions
forM
ilita
ry-R
elat
edPT
SD(c
ontin
ued)
Sour
cePa
rtic
ipan
ts(N
o.)
Cond
ition
sLo
nges
tFo
llow
-up,
mo
No.
(%)
Mea
nPo
st-T
reat
men
tTo
talP
TSD
Scor
ePr
e-Po
stDr
opin
PTSD
Sym
ptom
s
No.
(%)
Betw
een-
Grou
pES
From
Pret
reat
men
tto
Post
trea
tmen
tDr
opO
utRe
mis
sion
atPo
st-T
reat
men
t
%At
tain
ing
Clin
ical
lyM
eani
ngfu
lCha
nge
AtPo
sttr
eatm
ent
%Re
tain
ing
PTSD
Diag
nosi
sat
Post
trea
tmen
t
McL
ayet
al,3
920
11Ac
tive
duty
serv
ice
mem
bers
(10)
Virt
ualr
ealit
ygr
aded
expo
sure
ther
apy
None
0NR
48.1
(CAP
SIT
T)35
.4(C
APS)
7(7
0)sh
owed
impr
ovem
ent
of>3
0%
NR
NRAc
tive
duty
serv
ice
mem
bers
(10)
TAU
None
1(1
0)NR
72.3
(CAP
SIT
T)9.
4(C
APS)
1(1
1%)
NR
Poss
emat
oet
al,4
020
11O
EF/O
IFve
tera
ns(1
5)W
ritte
nem
otio
nal
disc
losu
re3
0NR
NRNR
NRNR
η2p
=.0
3O
EF/O
IFve
tera
ns(1
6)W
ritin
gco
ntro
l3
5(3
1)NR
NRNR
NRNR
Jain
etal
,41
2013
Activ
edu
tyM
arin
es(6
8)HT
+GI
+TA
UNo
ne6
(9)
NR40
.7(3
7.0-
44.2
)(P
CLIT
T)13
.3(P
CLIT
T)NR
NRd
=0.
85(P
CLIT
T)Ac
tive
duty
Mar
ines
(55)
TAU
None
15(2
7)NR
52.0
(48.
0-56
.0)
(PCL
ITT)
3.6
(PCL
ITT)
NRNR
Kear
ney
etal
,42
2012
Vete
rans
(22)
MBS
R+
TAU
42
(8)
NR52
.45
(PCL
ITT)
7.43
(PCL
ITT)
8(3
6)NR
d=
0.51
(0.1
1-1.
12)
Vete
rans
(25)
TAU
41
(5)
NR58
.5(P
CLIT
T)4.
41(P
CLIT
T)5
(25)
NR
Nile
seta
l,43
2012
Vete
rans
(17)
Min
dful
ness
6w
k4
(24)
NR47
.46
(CAP
Sco
mpl
eter
)13
.46
(CAP
Sco
mpl
eter
)5
(38.
5)(2
0po
ints
onCA
PS)
NR
NRVe
tera
ns(1
6)Ps
ycho
educ
atio
n6
wk
2(1
3)NR
74.0
0(C
APS
com
plet
er)
+1.5
(CAP
Sco
mpl
eter
)1
(7.1
)(20
poin
tson
CAPS
)
Stra
chan
etal
,44
2012
OEF
/OIF
vete
rans
and
activ
edu
tyse
rvic
em
embe
rs(2
0)
BA-T
Ein
pers
onNo
ne5
(25)
NR47
.9(P
CLco
mpl
eter
)11
.1(P
CLco
mpl
eter
)NR
NR
d=
0.33
OEF
/OIF
vete
rans
and
activ
edu
tyse
rvic
em
embe
rs(2
0)
BA-T
Ete
lehe
alth
None
4(2
0)NR
41.4
(PCL
com
plet
er)
15.8
(PCL
com
plet
er)
NRNR
Borm
ann
etal
,45
2013
Vete
rans
(71)
Man
tram
repe
titio
n+
TAU
6w
k5
(7)
η2p
=.0
366
.16
(CAP
SIT
T)16
.92
(CAP
SIT
T)18
(24)
NR
NRVe
tera
ns(7
5)TA
U6
wk
5(7
)72
.59
(CAP
SIT
T)10
.24
(CAP
SIT
T)9
(12)
NR
Chur
chet
al,4
620
13Ve
tera
ns(3
0)EF
T+
TAU
61
(3)
39(8
0)ov
eral
l(in
clud
ing
the
wai
tlist
that
rece
ived
EFT)
39.4
1(P
CLco
mpl
eter
)22
.6(P
CLco
mpl
eter
)NR
3(1
0)
NRVe
tera
ns(2
9)TA
U/w
aitli
st6
4(1
4)39
(80)
over
all
(incl
udin
gth
ew
aitli
stth
atre
ceiv
edEF
T)
63.2
3(P
CLco
mpl
eter
)+
0.52
(PCL
com
plet
er)
NR28
(96)
(con
tinue
d)
Psychotherapy for Military-Related PTSD Review Clinical Review & Education
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Copyright 2015 American Medical Association. All rights reserved.
1 notable exception,24 sample sizes have tended to besmaller, and no large methodologically robust trials of pro-longed exposure have been published in US male veter-ans with combat trauma. The only available data on pro-longed exposure in US combat-exposed male veteranscome from 2 small trials that studied biomarkers associ-ated with clinical outcomes.26,27
Efficacy of EMDRRCTs of EMDR for military-related PTSD (all conducted priorto the wars in Iraq and Afghanistan) involved small samples,tested only brief interventions (1-3 sessions),28,55,56 or in-volved dismantling comparisons (eliminating eyemovements).57 They also generally did not use methodol-ogy consistent with modern trials. In the 2 trials testing ad-equate doses of EMDR there were large symptomreductions,58 and 78% of completers no longer met crite-ria for PTSD.29 EMDR performed comparably to variants inwhich the eye tracking was removed or when comparedwith an active non–trauma-focused therapy.58 EMDR out-performed waitlisting (ie, no treatment) and biofeedback-assisted relaxation, with results maintained at 9-monthfollow-up.29 In sum, the efficacy of EMDR remains largelybased on civilian studies59; additional studies in militarypopulations are needed.
Second-Line InterventionsGiven high dropout and nonresponse rates from first-linetherapies, an increasing number of trials have examined anarray of alternatives, including variations of cognitive-behavioral therapy38,44 or novel delivery modalities, suchas virtual reality36,39 or web-based content.33 A variant ofEMDR, accelerated resolution therapy, demonstrated largeeffects (d = 1.25) compared with an educational control con-dition similar to waitlisting in a preliminary RCT of veter-ans with PTSD.47
Other trials have tested complementary and alterna-tive therapies that are theoretically and mechanisticallydistinct. Acupuncture combined with usual care outper-formed usual care alone (d = 1.7)48; small trials haveshown some evidence of efficacy for mindfulness-basedinterventions,43 mantram repetition (ie, silent repetitionof a word or phrase with spiritual significance),34,45 atten-tion bias modif ication,49 and memory specif icitytraining.50 Healing touch therapy, involving tapping bodypoints while engaging in non–exposure-based guidedimagery, also demonstrated efficacy over treatment asusual (d = 0.85).41 These findings suggest that a variety ofdisparate treatment mechanisms are associated withreduced PTSD symptoms.
In contrast, treatments that have failed to demon-strate efficacy among veterans include relaxation, deepbreathing, biofeedback, and mindfulness-based stressreduction.30,35,42 A brief 3-session intervention consist-ing of writing about combat traumas produced little mean-ingful PTSD improvement and did not outperform writingabout one’s use of time.40 Cognitive-behavioral grouptherapy aimed at comorbid PTSD and depression,31 andTa
ble
2.Su
mm
ary
ofO
utco
mes
From
RCTs
ofSe
cond
-Lin
eIn
terv
entio
nsfo
rMili
tary
-Rel
ated
PTSD
(con
tinue
d)
Sour
cePa
rtic
ipan
ts(N
o.)
Cond
ition
sLo
nges
tFo
llow
-up,
mo
No.
(%)
Mea
nPo
st-T
reat
men
tTo
talP
TSD
Scor
ePr
e-Po
stDr
opin
PTSD
Sym
ptom
s
No.
(%)
Betw
een-
Grou
pES
From
Pret
reat
men
tto
Post
trea
tmen
tDr
opO
utRe
mis
sion
atPo
st-T
reat
men
t
%At
tain
ing
Clin
ical
lyM
eani
ngfu
lCha
nge
AtPo
sttr
eatm
ent
%Re
tain
ing
PTSD
Diag
nosi
sat
Post
trea
tmen
t
Kip
etal
,47
2013
Serv
ice
mem
bers
and
vete
rans
(29)
ART
33
(10)
NR42
.00
(PCL
ITT)
15.4
(PCL
ITT)
17(6
5)(P
CLco
mpl
eter
)NR
d=1.
25Se
rvic
em
embe
rsan
dve
tera
ns(2
8)At
tent
ion
cont
rol
3NR
NR54
.3(P
CLIT
T)2.
1(P
CLIT
T)3
(13)
(PCL
com
plet
er)
NR
Enge
leta
l,48
2014
Activ
edu
tyso
ldie
rs(2
8)Ac
upun
ctur
e+
TAU
12w
k1
(4)
NR38
.8(P
CLIT
T)19
.3(P
CLIT
T)NR
NR
NRAc
tive
duty
sold
iers
(27)
TAU
12w
k0
NR51
.5(P
CLIT
T)3.
9(P
CLIT
T)NR
NR
Kuck
ertz
etal
,49
2014
Inpa
tient
activ
edu
type
rson
nel(
20)
Atte
ntio
nbi
asm
odifi
catio
nNo
ne8
(40)
NR42
.83
(PCL
com
plet
er)
20.2
5(P
CLco
mpl
eter
)NR
NR
NRIn
patie
ntac
tive
duty
pers
onne
l(17
)At
tent
ion
cont
rol
cond
ition
None
0NR
51.6
5(P
CLco
mpl
eter
)10
.06
(PCL
com
plet
er)
NRNR
Mor
adi
etal
,50
2014
Irani
anve
tera
ns(1
2)M
EST
30
NR50
.17
(IES
-RIT
T)30
.91
(IES
-RIT
T)NR
NR
d=
4.79
Irani
anve
tera
ns(1
2)W
aitli
st3
0NR
75.3
4(I
ES-R
ITT)
+0.
01(I
ES-R
ITT)
NRNR
Abbr
evia
tions
:ART
,acc
eler
ated
reso
lutio
nth
erap
y;BA
-TE,
beha
vior
alac
tivat
ion
and
ther
apeu
ticex
posu
re;
CAPS
,Clin
icia
nAd
min
ister
edPT
SDSc
ale;
CBT,
cogn
itive
beha
vior
alth
erap
y;co
mpl
eter
,tre
atm
entc
ompl
eter
sam
ple
only
;EFT
,em
otio
nalf
reed
omte
chni
ques
;ES,
effe
ctsiz
e;H
T+
GI,h
ealin
gto
uch
with
guid
edim
ager
y;IE
S-R,
Impa
ctof
Even
tSca
le–R
evise
d;IT
T,in
tent
-to-
trea
t;M
BSR,
min
dful
ness
-bas
edst
ress
redu
ctio
n;
MES
T,m
emor
ysp
ecifi
city
trai
ning
;η2 p
,par
tiale
ta-s
quar
ed;N
R,no
trep
orte
d;PC
L,PT
SDCh
eckl
ist;
PCT,
pres
ent-
cent
ered
ther
apy;
PSSI
,PTS
DSy
mpt
omSc
ale
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Clinical Review & Education Review Psychotherapy for Military-Related PTSD
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comorbid PTSD and substance dependence, did not substantiallyimprove symptoms and was equivalent to controls.
DiscussionThe past 10 years has seen unprecedented interest in identifying ef-fective PTSD treatments for service members and veterans. Find-ings from RCTs indicate a significant need for further treatment de-velopment and improvement. CPT and prolonged exposure, the 2most widely used first-line (ie, recommended) therapies, show largewithin-group (pretreatment to posttreatment) effect sizes. How-ever, effect sizes, which are more commonly used in psychology lit-erature than in medical literature, reflect mean outcomes and do notadequately capture heterogeneity in patient outcomes; betweenone-third and one-half of patients receiving CPT or prolonged ex-posure did not demonstrate clinically meaningful symptom change(when this outcome was reported). Approximately two-thirds of pa-tients receiving CPT or prolonged exposure retained their diagno-sis posttreatment. Mean PTSD scores have tended to remain at orabove diagnostic thresholds after treatment, and the 2 studies re-porting remission rates suggest that symptom remission is rela-tively uncommon. Most importantly, many trials of CPT and pro-longed exposure have compared patients receiving the interventionwith patients not receiving any standardized intervention (waitlist)or with patients receiving treatment as usual. When CPT and pro-longed exposure were compared with non–trauma-focused psy-chotherapies, such as present-centered therapy, similar levels ofsymptom improvement were often observed, particularly atfollow-up intervals.
Approximately one-fourth of patients enrolled in clinical trialsand receiving CPT and prolonged exposure dropped out during treat-ment. These proportions are broadly comparable to the propor-tions of dropouts in studies of trauma-focused therapies in civilians60
and trials of depression in veterans.61 Treatment nonretention hasbeen a significant problem in military-related PTSD care more gen-erally; several large observational studies in both the VA and DoDfound that only a small proportion of individuals receive a mini-mally adequate number of mental health encounters after PTSDdiagnosis.62 Reasons for not seeking treatment and dropout are com-plex and include stigma, confidentiality concerns, time demands, per-ceived treatment inefficacy, and discomfort with the therapist.62
Current VA policies emphasize CPT and prolonged exposure astreatments of choice. Clinical practice guidelines (including the VA/DoD guideline52), based largely on studies in civilians, also includeCPT and prolonged exposure as first-line recommendations for adultswith PTSD, although EMDR and other trauma-focused therapies aregiven at least equal standing (separate recommendations for ser-vice members and veterans are not made). Some evidence sug-gests that outcomes for PTSD treatment tend to be better amongcivilians than among veterans,63,64 although this has not been con-sistent and remains an empirical question. Potential reasons whytreatment outcomes may be worse among military and veteranpopulations include the extended, repeated, and intense nature ofdeployment trauma65 and the fact that service members are ex-posed not only to life threats but to traumatic losses and morally com-promising experiences that may require different treatmentapproaches.66-68 A recent meta-analysis comparing trauma-
focused and non–trauma-focused therapies (both civilian and mili-tary trauma) found that, in populations with more complex trauma,such as veterans and refugees, there was little difference in effi-cacy; moderate differences favoring trauma-focused therapies wereonly present for less complex traumas.69 Additional likely reasonsfor worse outcomes in veterans include comorbidities (eg, 87% ofveterans with PTSD presenting to VA primary care clinics have at least1 psychiatric comorbidity, with the mode being 3-4 disorders70) anddisability compensation incentives. To contextualize these find-ings, a recent narrative review of cognitive-behavioral therapy fordepression in veterans similarly showed that relatively few trials areavailable, cognitive-behavioral therapy often does not outperformcontrols, and results compare unfavorably with civilian outcomes.61
One unresolved issue is whether focusing on the trauma, eitherthrough exposure or cognitive reframing, is necessary for recovery.The findings that interventions such as present-centered therapyand, in civilians, interpersonal psychotherapy71 are associated withefficacy similar to that of trauma-focused therapy needs to be rec-onciled with the common assumption in the field that fidelity to atrauma-focused approach is essential for symptom improvement.VA/DoD treatment guidelines, and other guidelines, specify that pa-tient preference should be a guiding factor in treatment selection.Yet little research has been conducted on patient preferences or onother behavioral and biological predictors of dropping out of care,clearly the strongest influence on treatment effectiveness.62
Several large-scale military-related PTSD trials are currently on-going, including trials with active-duty service members, a popula-tion rarely studied but an important target for early interventions.
Box. Descriptions of First-Line Interventions
Cognitive therapy. Focuses on modifying dysfunctional thoughts,beliefs, and expectations by identifying, challenging, and replacingmaladaptive cognitions. Cognitive processing therapy (CPT) is themost widely used example of cognitive therapy in theDepartments of Defense and Veterans Affairs.
Exposure therapy. Comprises psychoeducation, imaginal ornarrative exposure (targeting trauma memories), in vivo exposure(targeting external stimuli or situations that the patient avoidsbecause of the trauma), and processing of thoughts and emotions,with the aim of confronting, rather than avoiding, fearedmemories and stimuli. Prolonged exposure therapy (PE) is themost widely used example of exposure therapy in theDepartments of Defense and Veterans Affairs.
Eye movement desensitization and reprocessing (EMDR). Askspatients to attend to emotionally disturbing material in briefsequential doses while focusing on an external stimulus, typicallytherapist-directed lateral eye movements. Additionally, treatmentinvolves identifying bodily sensations associated with the image,identifying an aversive cognition associated with the trauma, andidentifying an alternative positive cognition to replace the aversivecognition.
Stress inoculation training (SIT). Teaches anxiety-managementskills including relaxation training, breathing retraining, positivethinking and self-talk, assertiveness training, and thoughtstopping. It may also include cognitive restructuring and exposure,although these are optional elements.
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A large (N = 900) multisite trial is directly comparing CPT and pro-longed exposure in veterans,72 although it remains to be seen to whatextent continued focus on efficacy comparisons will improve care,particularly since equivalency between leading interventions has con-sistently been demonstrated in civilians.59,73 Ongoing trials focus al-most exclusively on 2 trauma-focused interventions, despite thesetherapies being rarely used in actual VA and DoD clinical practice (lessthan 10% of the time, in one estimate of New England region VAcenters74). The effectiveness of psychotherapies for PTSD as actu-ally delivered in the VA and DoD has received little empiricalattention.75
Limitations of this descriptive review (which did not use for-mal meta-analytic techniques or access all international data-bases) include the relatively small number of studies and samplesizes, limiting generalizability. Studies often did not report keyoutcomes, such as symptom remission, loss of diagnosis, or clini-cally important subthreshold PTSD76,77 (which would includeindividuals who met previous diagnostic criteria but no longermeet the latest criteria).78 It is also noteworthy that the metricsof meaningful symptom improvement (typically a 10- or 12-pointdecrease in PTSD scores) are researcher-defined, not patient-defined; patient perspectives and preferences have not been aprimary focus of research. Likewise, most trials have reportedonly total PTSD symptom scores, and the potential for differentialtreatment effects across symptom clusters remains unexamined.Trials also have not reported the need for continued care follow-ing CPT or prolonged exposure; for many patients, 12 sessions ofmanualized trauma- or non–trauma-focused treatment is insuffi-cient. Definitions of treatment dropout also differ between stud-ies, and studies often fail to delineate why patients dropped out.Moreover, military personnel and veterans participating in PTSDtrials are often taking psychotropic medications concurrently (ap-proximately three-fourths of participants in CPT and prolongedexposure trials), creating potential confounding. Data are lackingon the relative efficacy of psychotherapy compared with medica-tion or the synergistic effects of combined treatments.79 Last,although we considered group and individual therapy together,these 2 modalities are practically and mechanistically distinct. Arecent meta-analysis of civilian and veteran group therapies
found smaller effect sizes in combat samples; although grouptherapy outperformed waitlist controls, it did not outperformactive-comparison conditions.80
ConclusionsPTSD in military and veteran populations is a complex and difficult-to-treat disorder for which first-line trauma-focused psycho-therapy approaches are not optimal. Although efficacious for somepatients, first-line treatments have high nonresponse and dropoutrates, and patients often remain symptomatic. Two principal clini-cal conclusions can be drawn from this review. First, the availableevidence supports the use of either trauma-focused or structurednon–trauma-focused therapies, depending on patient preferencesor other factors that might promote treatment retention. Second,there is a need for improvement in existing PTSD treatments as wellas the development and testing of novel evidence-based treat-ment strategies, whether trauma-focused or non–trauma-focused.An increasing number of novel therapeutic approaches have beenshown efficacious to varying degrees, but progress in the field is un-likely without better understanding of treatment mechanisms, pa-tient preferences, factors influencing treatment engagement and re-tention, and behavioral and biomarker prediction of differentialtreatment responses.
ARTICLE INFORMATION
Author Contributions: Dr Steenkamp had fullaccess to all of the data in the study and takesresponsibility for the integrity of the data and theaccuracy of the data analysis.Study concept and design: Steenkamp, Litz.Acquisition, analysis, or interpretation of data:Steenkamp, Litz, Hoge, Marmar.Drafting of the manuscript: Steenkamp, Litz,Marmar.Critical revision of the manuscript for importantintellectual content: Hoge, Marmar.Administrative, technical, or material support: Litz.Study supervision: Litz, Marmar.
Conflict of Interest Disclosures: All authors havecompleted and submitted the ICMJE Form forDisclosure of Potential Conflicts of Interest andnone were reported.
Disclaimer: The views of this article are those ofthe authors and do not represent an official
position of the US Army, Department of Defense, orlisted institutions.
Additional Contributions: We thank CarolHundert, BS (VA Boston Healthcare System), andAmelia Tankersley, BA (VA Boston HealthcareSystem), for assistance with manuscriptpreparation. They received no compensation fortheir contributions.
Submissions: We encourage authors to submitpapers for consideration as a Review. Pleasecontact Mary McGrae McDermott, MD, [email protected].
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• Posttraumatic stress disorder (PTSD) is a disabling psychiatriccondition common among military personnel and veterans
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• There is an urgent need for innovative treatment strategies,whether trauma-focused or non–trauma-focused
Clinical Review & Education Review Psychotherapy for Military-Related PTSD
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