International Workshop on Social Statistics , 22-24 November 2010 , BEIJING , CHINA
Crime Data Survey
By …….. Oraphin Mathew
Anon Juntavich
TOPICS
 Background
 Objective
 Scope and coverage
 2006 Pilot survey in Bangkok
 2007 Pilot survey in Nakhon Si Thammarat,
 2008 Crime data survey
 2010 Crime data survey
 Main findings of surveys
2
Background

Cooperation between National Statistical Office &
Ministry of Justice to conduct a sample survey of
crime data in Thailand.

The first survey, 2006 Crime data was conducted
as a pilot survey only in Bangkok .

In 2007, the second pilot survey was carried
out in Nakhon Si Thammarat province only.
3
Background
(cont.)

Crime data for the whole kingdom was collected as
a sample survey in 2008 to have the police area
data.

In 2010, only having the basic information data for
the whole kingdom ( budget limitation to collect
detailed information ).

Plans to have sample survey every two years.
4
Objective

Collecting data :•
•
•
•
•
•
characteristics of victims of crime
characteristics of offender
location of crime
time of occurring crime
relationship between offender & victim
type of crime , etc.
5
Scope and coverage

Population aged > 15 years who suffer cause crime
in the previous year.

Crimes are divided into four categories
•
•
•
•
crime against property
crime against life and body
sex crime
disclosure private information
6
2006 Pilot Survey ( Bangkok )

Sample Design : using a two-stage sampling
•
First stage ( PSU ) : 450 sampled BLKs by
pps - sampling
( N = 16,717 BLKs )
•
Second stage (SSU) : 80 sampled hhs. per BLK
by sys - sampling
………………………….……………………………
(450 BLKs x 80 hhs per BLK = 36,000 hhs )7
2006 Pilot Survey ( Bangkok )

Data collection
Sampled household
Did any members in hh. face victims of crime
last year ? (using listing form)
yes
no
terminate
face to face interviewing
8
2007 Pilot Survey
(Nakhon Si Thammarat Province)

Sample Design : using a stratified cluster sampling
•
stratification : local administration area ( = 2 )
•
municipal areas : 237 sampled Blocks ( BLK )
by pps – sampling
( N=436 BLKs )
•
non-municipal areas : 157 sample villages
by pps – sampling
( N=1,563 vils )
********** 394 sampled BLK/vil.
9
2007 Pilot Survey
(Nakhon Si Thammarat Province)

Sample Design : using a stratified cluster sampling
• every households in each sample BLK/villages
are interviewed
………………………….……………………………
(394 BLKs/vil x 150 hhs per BLK/vil = 59,100 hhs )
10
2007 Pilot Survey
(Nakhon Si Thammarat Province)
 Data collection
Sampled household
Did any members in hh. faces victims of crime
last year ? (using listing form)
no
yes
terminate
face to face interviewing
11
2008 Crime Data Survey

Sample Design : using a stratified cluster sampling
•
stratification : police area (= BKK+9 regions) &
local administration area ( = 2 )
•
municipal areas : 3,336 sampled Blocks ( BLK )
by pps – sampling
( N=42,593 BLKs )
•
non-municipal areas : 2,460 sample villages
by pps – sampling
( N=67,373 vils )
**********
5,796 sampled BLK/vil.
12
2008 Crime Data Survey

Sample Design : using a stratified cluster sampling
• every households in each sample BLK/villages
are interviewed
13
2008 Crime Data Survey :

Sample Size
Police area
Total
( BLKs/villages)
Municipal areas
( blocks)
Non-municipal areas
( villages )
BKK
312
312
-
Region 1
696
384
312
Region 2
612
336
276
Region 3
564
300
264
Region 4
732
420
312
Region 5
576
324
252
Region 6
660
372
288
Region 7
660
360
300
Region 8
492
276
216
Region 9
492
252
240
Total
5,796
3,336
2,460
14
2008 Crime Data Survey
 Data collection
Sampled household
Did any members in hh. face victims of crime
last year ? (using listing form)
no
yes
terminate
face to face interviewing
15
2010 Crime Data Survey
 Collecting only basic information by adding
entries in the listing form of LFS ( because of
the limitation of budget )

Sample design : stratified cluster sampling

Sample size : 5,796 sampled Blocks/villages for
presentation BKK and 9 police areas
16
Main findlings from the survey
Item
1. characteristics
of victim of
crime
2006
2007
2008
(Bangkok)
(Nakhon Si Thammarat)
(whole kingdom)
1.
2.
3.
4.
57.4% are female
65.3% married
26.0% age 45-59
39.1% earning
฿5,000 - ฿10,000
5. accommodation
has no privacy,
no fence
1.
2.
3.
4.
59.1% are male
78.4% married
32.7% age 45-59
45.7% earning
< ฿ 5,000
5. 92.8% accommodation
has no privacy
6. 87.3% no fence
2. characteristics
of offender
1.
2.
3.
4.
5.
51.9% are male
74% married
32.5% age 45-59
33.7% earning <฿5,000
35.7% victims of sex
crimes ( most are
women who have no
work )
51.0% have only one
offender per event
2.1 one offender
1. 81.9% are male
2. 36.6% age 18-25
1. 80.3% are male
2. 36.7% age 18-25
1. 83.2% are male
2. 30.7% age 18-25
2.2 > 1 offenders
1. 84.9% are male
2. 49.8% age 18-25
1. 80.5% are male
2. 42.2% age 18-25
1. most are male
2. 43.1% age 18-25
17
Main findlings from the survey
Item
2006
2007
2008
(Bangkok)
(Nakhon Si
Thammarat)
(whole kingdom)
3. location of crime
1. 50.2% are
accommodation of
victims
1. 70.4% are
accommodation of
victims
1. 77.4 % are
accommodation of
victims
4. time of occurring
crime
1. 22.4% time
18.00 – 24.00
1. 61.0% time
18.01 – 06.00
1. 36.5% time
18.01 – 06.00
5. relationship
between offender
and victim
1. 74.0% didn’t know
each other before
1. 54.0% didn’t know
each other before
1. 54.7% didn’t know
each other before
2. 11% neighbors of
victim
18
Main findlings from the survey
Item
2006
2007
2008
(Bangkok)
(Nakhon Si Thammarat)
(whole kingdom)
1.3%
0.69%
0.6%
7. type of crime - total
100.0%
100.0%
100.0%
7.1 crime against
property
93.1%
93.8%
94.0%
7.2 crime against life
and body
4.2%
4.4%
4.6%
7.3 sex crime
0.8%
-
0.3%
7.4 impersonation
person information
1.9%
1.8%
1.1%
6. percentage of
victims
19
Main findlings from 2008 survey
Item
WK
BKK
A1
• male
51.9
46.4
50.2
• female
48.1
53.6
49.8
2.7
1.9
1.8
• primary
51.9
31.2
• secondary
12.6
• bachelor
11.6
A2
A3
A8
A4
A5
A6
A7
A9
51.4 47.9
58.3
51.1
52.1
52.4
61.5
52.2
48.6 52.1
41.7
48.9
47.9
47.6
38.5
47.8
1.9
2.7
5.6
5.5
4.3
1.8
3.1
37.5
58.3 69.5
65.7
48.8
62.9
57.2
54.8
49.9
13.3
16.1
12.2
9.9
10.1
12.6
10.0
12.1
14.2
15.8
23.6
15.9
8.0
4.6
6.6
14.4
6.5
7.4
8.3
10.0
1. characteristics
of victim of
crime
1.1 sex
1.2 education (majority)
• none
2.7
degree
20