Table 2

Univariate analysis of demographic and behavioural factors with chlamydial infection

VariableChlamydiaControlsχ2 p value
*Divorced, separated, living together, widowed.
Sex
Female471 (48%)643 (53%)0.014
Male515 (52%)569 (47%)
Age
Under 20214 (22%)127 (10%)<0.001
20–24279 (28%)314 (26%)
25–30260 (26%)314 (26%)
Over 30233 (24%)457 (38%)
Marital status
Single895 (91%)959 (79%)<0.001
Married48 (5%)140 (12%)
Other*33 (3%)92 (8%)
Ethnic group
White472 (48%)776 (64%)<0.001
Black Caribbean397 (40%)265 (22%)
Other102 (10%)142 (12%)
Total no of partners (past year)
None13 (2%)75 (7%)<0.001
1172 (27%)445 (40%)
2149 (23%)272 (25%)
3 or more308 (48%)314 (28%)
No of casual partners (past year)
None317 (51%)678 (63%)<0.001
1143 (23%)234 (22%)
2 or more166 (27%)159 (15%)
Condom use with all partners
Never149 (24%)277 (27%)0.002
Sometimes415 (67%)602 (59%)
Always55 (9%)138 (14%)
Condom use with casual partners
Never97 (29%)149 (34%)0.039
Sometimes115 (34%)114 (26%)
Always124 (37%)177 (40%)
History of gonorrhoea
No603 (87%)1004 (90%)0.085
Yes88 (12%)113 (10%)
History of chlamydia
Yes115 (17%)157 (14%)0.12
No575 (83%)967 (86%)
History of foreign partner
No770 (84%)842 (74%)<0.001
Yes149 (16%)291 (26%)
No of same sex partners
None621 (98%)1009 (93%)<0.001
1 or more11 (2%)72 (7%)
Alcohol
None439 (45%)252 (21%)<0.001
1–5 units/week233 (24%)408 (34%)
>5 units/week302 (31%)529 (44%)
Smoking
None358 (37%)92 (8%)<0.001
1–5/day330 (34%)671 (56%)
Over 5/day289 (30%)424 (36%)
Illicit drug use in past year
No359 (56%)778 (70%)<0.001
Yes284 (44%)329 (30%)
Occupational group
Homemaker42 (7%)66 (6%)0.012
Student143 (23%)207 (19%)
Unemployed130 (20%)179 (16%)
Working318 (50%)633 (58%)