joe gfroerer director, division of population surveys, oas, samhsa presentation for nhtsa
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Driving Under the Influence of Alcohol or Illicit Drugs: Data from the National Survey on Drug Use and Health (NSDUH). Joe Gfroerer Director, Division of Population Surveys, OAS, SAMHSA Presentation for NHTSA March 22, 2006. Overview of NSDUH. Conducted Since 1971; annually since 1990 - PowerPoint PPT PresentationTRANSCRIPT
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Driving Under the Influence of Alcohol or Illicit Drugs: Data from the National Survey on Drug Use
and Health (NSDUH)
Joe Gfroerer
Director, Division of Population Surveys, OAS, SAMHSA
Presentation for NHTSA
March 22, 2006
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Overview of NSDUH
• Conducted Since 1971; annually since 1990
• Prior to 2002, called the National Household Survey on Drug Abuse
• Representative nationally and (since 1999) in each State
• Civilian, noninstitutionalized population, age 12+
• 2002, 2003 and 2004 data comparable; not comparable with data prior to 2002
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NSDUH Sample Design
Stage 1: 7,200 area segments
- 50% overlap in consecutive yrs
Stage 2: 180,000 addresses screened
Stage 3: 67,500 completed interviews
- 3,600 in each large state (8)
- 900 in each small state (43)
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NSDUH Data Collection
Part self-administered, ACASI
$30 incentive payment (beginning 2002)
Household screener (5min.)
Select 0, 1, or 2 HH members
Face-to-face interview, CAI (1hr.)
Quarterly samples of dwelling units - 12 month field period
Oversample ages 12 - 25
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NSDUH Questionnaire - Core
Tobacco, Alcohol, Illicit Drug Use
- Recency
- Frequency
- Initiation
Demographics
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NSDUH Questionnaire -Supplemental Topics
Attitudes about drugs
Risk/protective factors
Treatment
Mental health
Workplace issues
Income, program participation
Dependence, abuse (DSM-IV)
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DUI Questions from 2005 NSDUH
SP06a During the past 12 months, have you driven a vehicle while you were under the influence of a combination of alcohol and illegal drugs used together?
SP06b During the past 12 months, have you driven a vehicle while you were under the influence of alcohol?
ORDuring the past 12 months, have you driven a vehicle while you were under the influence of alcohol only?
SP06c During the past 12 months, have you driven a vehicle while you were under the influence of illegal drugs?
ORDuring the past 12 months, have you driven a vehicle while you were under the influence of illegal drugs only?
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Other DUI-related Questions from 2005 NSDUH
RK04c How often do you wear a seatbelt when you drive a car?
SP03j In the past 12 months, were you arrested and booked for driving under the influence of alcohol or drugs?
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Comparing Different Surveys
Mode/setting differences:• School > Face to face > Telephone• Self Admin. > Interviewer Admin.
Design differences:• Coverage/Target Population• Response rate• Definitions, question wording, context
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Driving a Vehicle Under the Influence of Illicit Drugs or Alcohol in the Past Year, by Age: 2004
Percent Driving Under the Influence in Past Year
1.43.0
9.2
16.7
20.2
25.0
33.030.4
25.5
19.3 19.7
15.4
12.2
8.55.7
2.4
26.228.5
18.0
28.1
32.4
0.50.20
5
10
15
20
25
30
35
Age in Years
12 13 14 15 16 17 18 19 20 21 22 23 24 25 30-34 40-44 50-54 60-64
26-29 35-39 45-49 55-59 65 orOlder
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DUI by Type of Substance and Age:
2004Percent DUI in Past Year
10.2
20.2
28.2
16.8
6.29.2
14.512.6
20.9
0.7
3.86.9
0.0
5.0
10.0
15.0
20.0
25.0
30.0
16-17 18-20 21-25 26-34 35-49 50+
Alcohol Illicit Drug
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Driving a Vehicle Under the Influence of Alcohol or Illicit Drugs Among Persons Aged 18 or Older,
by Race/Ethnicity: 2003
Percent Driving Under the Influence in Past Year
15.3
11.4 11.18.4
17.618.3
0
4
8
12
16
20
24
AmericanIndian/AlaskaNative
Non-Hispanic
White
NativeHawaiianor OtherPacific
Islander
Hispanic Non-Hispanic
Black
Asian
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Trends in DUI among Persons Aged 18 or Older: 2002-2004
Percent DUI in Past Year
4.8
16.4
4.7
15.714.6
4.5
15.615.4 14.7
02468
1012141618
Alcohol Illicit Drugs Either Alcohol or IllicitDrugs
2002 2003 2004
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DUI Alcohol Among Persons Aged 18 or Older, by Gender: 2002-2004
Percent DUI In Past Year
10.6
20
9.9
19.6
10
20.7
0
5
10
15
20
25
Male Female
200220032004
b
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DUI Illicit Drugs Among Persons Aged 18 or Older, by Gender: 2002-2004
Percent DUI In Past Year
3.1
6.9
2.8
6.5
2.7
6.6
0
2
4
6
8
Male Female
2002 2003 2004
b
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DUI among Persons Aged 18 or Older, by Type of Substance
and Educational Attainment: 2004Percent Driving Under the Influence in Past Year
9.0
12.3
17.9
4.5 4.5 4.5
0.02.04.06.08.0
10.012.014.016.018.020.0
Less than High School High School Some College or CollegeGrad
Alcohol Illicit Drug
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DUI among Persons Aged 18 or Older Who Have Used Substances, by Type of Substance
and Educational Attainment: 2004Percent of Users Driving Under the Influence in Past Year
17.7 19.023.2
31.3 33.0 33.6
0.0
5.0
10.0
15.0
20.0
25.0
30.0
35.0
40.0
Less than High School High School Some College or CollegeGrad
Alcohol Illicit Drug
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DUI among Persons Aged 18 or Older, by Type of Substance and County Type: 2004
14.9 15.7
13.3
10.3
13.7
4.45.3 4.7
2.8 3.6
0.02.04.06.08.0
10.012.014.016.018.020.0
Large Small Urbanized LessUrbanized
Rural
Alcohol Illicit DrugPercent DUI in Past Year
Metropolitan AreasNonmetropolitan Areas
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Driving Under the Influence of Alcohol in the Past Year among Persons Aged 18 or Older: Percentages, Annual
Averages Based on 2002, 2003, and 2004 NSDUHs
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Driving Under the Influence of Illicit Drugs in the Past Year among Persons Aged 18 or Older: Percentages,
Annual Averages Based on 2002, 2003, and 2004 NSDUHs
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Percentages of Drivers Aged 15 to 17 Reporting Driving Under the Influence of Alcohol in the Past Year, by GDL Rating: Annual Averages Based on
1999-2001 NHSDAs
9.110.2
11.5
9.5
8.0
0
2
4
6
8
10
12
Overall MostRestrictive
ModeratelyRestrictive
LessRestrictive
LeastRestrictive
Percent Driving Under the Influence in Past Year
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Questions?