|
Characteristic
|
Exposed N = 817
|
Controls N = 1128
|
P
|
|---|
| |
N
|
%
|
N
|
%
| |
|---|
|
Age groups, years
| | | | |
0.107
|
|
0–19
|
39
|
4.8
|
36
|
3.2
| |
|
20–39
|
526
|
64.4
|
736
|
65.2
| |
|
40–59
|
187
|
22.9
|
276
|
24.5
| |
|
60–79
|
56
|
6.9
|
76
|
6.7
| |
|
80–99
|
9
|
1.1
|
4
|
0.4
| |
|
Females
|
540
|
66.1
|
738
|
65.4
|
0.772
|
|
Marital Status
| | | | |
0.003
|
|
Single
|
271
|
33.5
|
293
|
26.1
| |
|
Married
|
497
|
61.4
|
778
|
69.3
| |
|
Divorced/separated
|
33
|
4.1
|
41
|
3.7
| |
|
Widow/widower
|
9
|
1.1
|
11
|
1.0
| |
|
Education
| | | | |
0.004
|
|
Primary school
|
37
|
4.7
|
59
|
5.3
| |
|
Secondary school
|
169
|
21.3
|
308
|
27.7
| |
|
University
|
587
|
74.0
|
746
|
67.0
| |
|
Source of income
| | | | |
<0.001
|
|
Working
|
576
|
71.1
|
881
|
78.7
| |
|
Out of Work
|
70
|
8.6
|
96
|
8.6
| |
|
Student
|
137
|
16.9
|
121
|
10.8
| |
|
Other
|
27
|
3.3
|
22
|
2.0
| |
|
Student autumn 2004
| | | | |
<0.001
|
|
No
|
503
|
62.7
|
842
|
75.8
| |
|
Yes, full time
|
261
|
32.5
|
229
|
20.6
| |
|
Yes, part time
|
38
|
4.7
|
40
|
3.6
| |
|
IBS
|
355
|
46.1
|
155
|
14.0
|
<0.001
|
-
Abbreviations: IBS Irritable Bowel Syndrome, P P-value from Pearson’s chi square (exact)
