Table 2

Non-symptom associations with urethral and/or rectal MG in MSM

Variable		Positive	Negative	OR (95% CI) χ² p value	Adjusted OR (95% CI)‡ Wald test p value
Age group, years	<20	2	27	1.1 (0.4 to 3.4)
	21–30	8	119	1.0
	31–40	9	129	1.04 (0.5 to 2.1)
	>40	10	134	1.1 (0.6 to 2.2)
	>40	10	134	p=0.9†

Total no of sexual partners	0 or 1	6	115	0.8 (0.4 to 1.6)	0.9 (0.4 to 1.7)
	2–5	13	202	1.0	1.0
	6–10	4	36	1.7 (0.8 to 3.9)	1.9 (0.8 to 4.2)
	>10	6	50	1.9 (0.9 to 3.8)	2.1 (1.0 to 4.2)
	>10	6	50	p=0.12†	p=0.08

Previous STI	Yes	27	312	3.9 (0.96 to 34.7)
	Yes	27	312	1.0
	No	2	91	p=0.06

UAI in past 3 months	Yes	18	192	1.8 (0.8 to 4.3)
	Yes	18	192	1.0
	No	11	210	p=0.18

GC	Positive	1	21	0.7 (0.02 to 4.4)
	Negative	28	387	1.0
	Negative	28	387	p=1.00*

CT	Positive	2	32	0.9 (0.1 to 3.8)
	Positive	2	32	1.0
	Negative	27	377	p=1.00*

HIV status	Positive	18	72	7.6 (3.2 to 18.7)	8.6 (5.1 to 14.6)
	Negative	11	337	1.0	1.0
	Negative	11	337	p<0.001	p<0.001

Non-chlamydial, NGU	Yes	11	46	4.8 (1.9 to 11.5)	4.3 (2.5 to 7.6)
	No	18	362	1.0	1.0
	No	18	362	p<0.001	p<0.001

↵* Fisher's exact test.
↵† χ² test for trend.
↵‡ Obtained from model selection procedure described in the text.
CT, C trachomatis; GC, N gonorrhoeae; MG, M genitalium; MSM, men who have sex with men; NGU, non-gonoccocal urethritis; OR, odds ratio; STI, sexually transmitted infection; UAI, unprotected anal intercourse.