Table 3

Determinants of infection with Chlamydia trachomatis for men and women in the development group (75% of all participants) selected for the multivariate analysis*

		Prevalence determinant (%)
Sex	Determinant	Cases	Non-cases	OR [95% CI]
*Only determinants selected for the multivariate analysis, based on a Wald test for univariate association of p<0.25, are shown.
†Was not included in the final analysis, because there was only one homo/bisexual women with a C trachomatis infection.
OR = odds ratio, CI = confidence interval.
Female	Number	62	2178
	Age ≤25	33.3	21.5	1.87 [1.08–3.23]
	Surinam or Antillean origin	20.3	10.1	2.35 [1.22–4.50]
	Unmarried and not cohabiting	71.2	47.6	2.79 [1.58–4.95]
	Heterosexual†	98.3	93.9	3.92 [0.54–28.51]
	Sexual debut <18 years	90.0	54.8	0.67 [0.40–1.12]
	New sex partner	21.7	8.5	3.12 [1.67–5.89]
	Lower abdominal pain	11.9	18.2	0.59 [0.27–1.33]
	Coloured discharge	20.3	14.3	1.55 [0.81–2.96]
	Heavy vaginal discharge	35.0	21.7	1.99 [1.16–3.41]
Male	Number	32	1438
	Age ≤30	54.8	43.6	1.58 [0.78–3.25]
	Surinam or Antillean origin	54.8	9.3	2.97 [1.25–7.06]
	Government health insurance	61.3	70.3	0.66 [0.31–1.38]
	≥15 years of education	72.4	54.9	2.19 [0.96–4.98]
	Sexual debut <18 years	66.7	52.3	1.85 [0.86–3.98]
	>5 lifetime sex partners	71.4	57.8	1.85 [0.81–4.24]
	Previous C trachomatis infection	10.3	4.9	2.31 [0.68–7.85]
	Urethral discharge	6.5	1.9	3.69 [0.83–16.39]
	Painful micturition	6.5	2.6	2.73 [0.62–11.96]