unece-unodc meeting on crime statistics, 25- 27 january 2006 session 4: dissemination of crime...

UNECE-UNODC Meeting on Crime Statistics, 25-27 January 2006

Session 4:Session 4:Dissemination of crime victim dataDissemination of crime victim data

Results from the UNECE-UNODC Results from the UNECE-UNODC questionnaire on victim surveysquestionnaire on victim surveys

Philippe LamonPhilippe Lamon

UNODCUNODC

Overview

Comparability of resultsComparability of results

Margin of errorMargin of error

Availability of data and dissemination Availability of data and dissemination

Were the results of the survey compared with

data on crimes reported to the police?

SurveysSurveys CountriesCountries

YesYes 2222 28%28% 1717 53%53%

NoNo 5050 64%64% 2626 81%81%

No answerNo answer 66 8%8% 55 16%16%

TotalTotal 7878 100%100% 3232

Rates per population of selected crimes

436 data are given on 1660 possible data 436 data are given on 1660 possible data (26%)(26%)

Rates per population of selected crimes

Problems:Problems:

- Period reference ?- Period reference ?

- Comparability ?- Comparability ?

- per household or per owner ?- per household or per owner ?

- 0.09= 0.09% or 9% ?- 0.09= 0.09% or 9% ?

- etc.- etc.

If the survey results have been made public, what margin of error was adopted in presenting the results?

33 relevant information 33 relevant information in 78 surveys (42%)in 78 surveys (42%)

Types of margin of error

Relevant Relevant informationinformation

% of all % of all surveyssurveys

‘‘Over 25% are considered unreliable’Over 25% are considered unreliable’ 66 18%18% 8%8%

Different according to the dataDifferent according to the data(groups, territory level, etc.)(groups, territory level, etc.)

22 6%6% 3%3%

95% confidence interval95% confidence interval 1414 42%42% 18%18%

Not enough specificNot enough specific(published with S.E., etc.)(published with S.E., etc.)

33 9%9% 4%4%

Other (0.03, 0.15, 1-2%, 0.035)Other (0.03, 0.15, 1-2%, 0.035) 88 24%24% 10%10%

N/AN/A 57%57%

TotalTotal 3333 100%100% 7878 100%100%

Margin error adopted by the ICVS

Is there a public use microdata file?


YesYes 3131 40%40% 1616 50%50%

NoNo 4343 55%55% 2323 72%72%


TotalTotal 7878 100%100% 3232

Are survey results available on internet?


YesYes 5151 65%65% 2525 78%78%

Not available yetNot available yet 33 4%4% 33 9%9%

NoNo 2222 28%28% 1818 56%56%


TotalTotal 7878 100%100% 3232

Were printed reports published with the results of the surveys?


YesYes 4747 66%66% 2929 91%91%

Yes, as part of the ICVS analysisYes, as part of the ICVS analysis 55 7%7% 44 13%13%

NoNo 2222 28%28% 1414 44%44%


TotalTotal 7878 100%100% 3232

Conclusion (1)

Comparability of the dataComparability of the data

1. with police data 28% of surveys but 53% of 1. with police data 28% of surveys but 53% of countries countries (63% of surveys in 88% of countries in dark figure/unreported crime, (63% of surveys in 88% of countries in dark figure/unreported crime, but only 28% of surveys compare with police data)but only 28% of surveys compare with police data)

2. with other surveys: lack of comparison2. with other surveys: lack of comparison

Conclusion (2)

Comparison of data collected between different Comparison of data collected between different surveys?surveys?

Possible if at least:Possible if at least:- same methodology- same methodology- same reference population, rates per owner/pop, - same reference population, rates per owner/pop, etc. etc.

Possible in two ways for international comparison:Possible in two ways for international comparison:- ICVS- ICVS- comparison of two surveys (complicated)- comparison of two surveys (complicated)

Conclusion (3)

Margin of errorMargin of error

Should we propose a model?Should we propose a model?

Conclusion (4)

Dissemination of resultsDissemination of results

1. on internet1. on internet(65% of surveys, 78% of countries) = good(65% of surveys, 78% of countries) = good

2. printed version2. printed version(67% of surveys, 94% of countries) = ok for countries, lack of (67% of surveys, 94% of countries) = ok for countries, lack of finalization for surveysfinalization for surveys

Thank youThank you

unece-unodc meeting on crime statistics, 25- 27 january 2006 session 4: dissemination of crime...

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