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Table 2
Risk factors in *Chlamydia trachomatis* infection
		Positive urine test	Negative urine test	P Value	OR (CI 95 %)
Habitual use of condom
	No	17	50	0.018	4.76 (1.30-17.36)
	Yes	3	42	0.018	4.76 (1.30-17.36)
Age in years
	15-17	2	20	0.25	2.47 (0.53-11.53)
	18-24	8	73	0.25	2.47 (0.53-11.53)
Last sexual relation with condom
	No	12	35	0.07	2.44 (0.91-6.57)
	Yes	8	57	0.07	2.44 (0.91-6.57)
Age group
	15-19	5	40	0.14	2.26 (0.76-6.75)
	20-24	15	53	0.14	2.26 (0.76-6.75)
Sexual orientation
	Heterosexual	20	92	1	NA₁
	Homo/bisexual	0	1	1	NA₁
New sexual partner in last 3 months
	0-1	14	69	0.64	1.29 (0.44-3.75)
	>1	6	23	0.64	1.29 (0.44-3.75)
Early oral contraceptive use
	No	13	63	0.54	0.70 (0.23-2.17)
	Yes	7	30	0.54	0.70 (0.23-2.17)
History of abortion
	No	20	89	0.99	NA
	Yes	0	4	0.99	NA
Travel abroad
	No	14	63	0.84	0.9 (0.31-2.57)
	Yes	6	30	0.84	0.9 (0.31-2.57)
Drug use
	No	20	87	0.99	NA
	Yes	0	6	0.99	NA
Alcohol use
	No	9	30	0.28	0.58 (0.22-1.55)
	Yes	11	63	0.28	0.58 (0.22-1.55)
Tobacco use
	No	16	73	0.88	0.91(0.27-3.03)
	Yes	4	20	0.88	0.91(0.27-3.03)
History of urogenital disorders
	No	15	71	0.83	1.12 (0.37-3.46)
	Yes	5	21	0.83	1.12 (0.37-3.46)

1 NA: Not Applicable.

Fernández-Benítez et al.

Fernández-Benítez et al. BMC Infectious Diseases 2013 13:388 doi:10.1186/1471-2334-13-388

Table 2