aspects of victim survey methodology: results from the inventory of victimisation surveys jonathan...

Aspects of victim survey methodology: results from the inventory of victimisation surveys

Jonathan Allen

UK Home Office

25.01.06 UNECE-UNODC Vienna 2

Using information from the inventory of victimisation surveys, with reference to the UK experience

To cover• Interview mode• Use of interviewers• Sampling techniques• Size of samples


Response to the inventory

In total• 33 countries• 78 questionnaires• Identify ‘currrent’ questionnaires

– Survey runs continuously– Survey was conducted in 2004 / 2005– Survey planned to run in the future

• 55 ‘current’ questionnaires


Analysis units

• All surveys– For use in standardisation

• All countries– To assess distribution across countries

• ‘Current’ surveys– To assess currency of overall findings


Findings – design overview

• Majority are cross-sectional surveys• Eight panel surveys• Five with a mixed design• One third referred to question sets within multi-

purpose surveys– What are the implications?


34

6

0

31

14

30

0

5

10

15

20

25

30

35

Face to face,at home using

paper


CAPI

Face to face,elsewhere

Self-administeredquestionnaire

(CASI)

Selfadministeredquestionnaire

(postal)

Telephoneinterviews

(CATI)

Internetsurvey

Nu

mb

er o

f o

vera

ll su

rvey

s

Overall surveys


20

13

23 3

21

00

5

10

15

20

25


paper


CAPI

Face to face,elsewhere

Self-administeredquestionnaire

(CASI)

Selfadministeredquestionnaire

(postal)

Telephoneinterviews

(CATI)

Internet survey

Nu

mb

er o

f cu

rren

t su

rvey

s

Current surveys


Findings – mode by country

• 17 countries report paper-based face to face • 10 countries report CAPI surveys• 16 countries report CATI surveys (7 of these also

run face to face surveys)


UK experience

• British Crime Survey:– Comparison of domestic violence results from CAPI and

CASI on BCS – 5 times as high on CASI

• Scottish Crime Survey:– Comparison of paper face to face and CATI – higher

victimsation rates on CATI


31

39

11

19

0

10

20

30

40

50

In-house External

All CATI

Findings – source of interviewers


Findings – sampling techniques

• 16 used simple probability sample • 54 used multistage sampling with stratification• Main stratifiers

– Geographical area (44)– Degree of urbanisation (25)– Age / sex (18 for each)– US only one to stratify by police crime figures


Findings – household or individual selection

Most countries interviewed only one person• 52 surveys based on selection of households

– 15 interviewed whole household – 37 interviewed one person only

• 24 surveys based on selection of individuals• What effect will this have on measuring household

crime?


General victimisation surveys

3

1413

majority female all female mix

Violence Against Women Surveys

6

7

8

majority female all female mix

Findings – interviewer gender


Findings – sample size

• Range from 400 to 60,000 households and from 333 to 75000 people

• 19 surveys included 10,000+ people and 6 other surveys included 10,000+ households

• Larger surveys tended to be multipurpose


Findings – 16 countries have surveys of 10,000+

AUSTRALIA ITALY SWEDEN

BELGIUM MEXICO SWITZERLAND

CANADA NETHERLANDS UNITED KINGDOM

GERMANY PORTUGAL USA

HUNGARY ROMANIA

IRELAND SPAIN


Conclusions

• Considerable experience of different methodologies in design and sampling

• Many surveys based on large samples• Use of in house external interviewers evenly

divided• Indications of the move away from paper but

not face to face


Contact details

[email protected]

[email protected]

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