Table 2.

Prevalence and associated factors of chlamydial infection among patients seeking clinic–based STI services in Shenzhen, China.

Associated factors	Prevalence of CT (%)	Univariate		Multivariate
		cOR (95% CI)	P -Value	aOR (95% CI)	P -Value
Sex
Male	10.7	1.33(1.14–1.56)	0.000*	–
Female	8.3	1.00		1.00
Age in years
≤ 24	15.4	2.10(1.76–2.52)	0.000*	1.27(1.01–1.59)	0.042*
>24	8.0	1.00		1.00
Marital status
Single or others	14.3	2.10(1.80–2.46)	0.000*	1.64(1.35–2.00)	0.000*
Married	7.3	1.00		1.00
Residence
Shenzhen	7.2	1.00		1.00
Other places	9.8	1.40 (1.16–1.68)	0.000*	–
Duration in Shenzhen
<2 years	11.2	1.44(1.22–1.71)	0.000*
≥2 years	8.3	1.00		1.00
Occupation
Workers	9.9	1.03(0.80–1.33)	0.801	–
Entertainment services	15.5	1.73(1.03–2.91)	0.038*	–
Businessman/Catering services	10.3	1.08(0.83–1.40)	0.560	–
Government employees	7.3	0.75(0.57–0.97)	0.028*	–
Household/Unemployed	7.8	0.80(0.60–1.07)	0.133	–
Others	9.6	1.00		1.00
Education level
Junior high school or below	10.1	1.58(1.24–2.01)	0.000*	1.47(1.13–1.91)	0.004*
Senior high school / technical secondary school	9.5	1.47(1.15–1.88)	0.002*	1.26(0.97–1.64)	0.089
Junior college	8.7	1.34(1.03–1.74)	0.032*	1.25(0.95–1.66)	0.111
College or above	6.7	1.00		1.00
Hold of health insurance
Yes	7.5	1.00		1.00
No	11.5	1.59(1.37–1.85)	0.000*	1.27(1.07–1.51)	0.007*
Casual sex in the last 3 months
Yes	10.1	1.21(1.04–1.41)	0.015*	–
No	8.5	1.00		1.00
Knowledge about CT
Unknown	9.4	1.23(1.01–1.49)	0.036*	1.23(1.00–1.51)	0.054
Known	7.8	1.00		1.00
Neisseria gonorrhoeae detection
Negative	8.4	1.00		1.00
Positive	33.7	5.52(4.06–7.49)	0.000*	4.49(3.25–6.21)	0.000*

^*P < 0.05. cOR, crude odds ratio; aOR, adjusted odds ratio; CI, confidence interval; CT, Chlamydia trachomatis.