. Author manuscript; available in PMC: 2017 Mar 1.

Published in final edited form as: Sex Transm Dis. 2016 Mar;43(3):165–171. doi: 10.1097/OLQ.0000000000000410

Table 2.

Demographic and behavioral characteristics associated with rectal GC/CT diagnosis

	Rectal GC and/or CT				Odds Ratio	95% CI	Adj. Odds Ratio ^a	95% CI
	No		Yes
	n	%	n	%

Income
< $50,000	536	52.9	39	68.4	0.52	0.29 – 0.92	0.79	0.41 – 1.50
$50,000 +	478	47.1	18	31.6
Has a 4-year college degree
No	444	43.8	30	52.6	0.70	0.41 – 1.20	0.87	0.49 – 1.53
Yes	570	56.2	27	47.4
Relationship status
Single	512	50.5	37	64.9	0.55	0.32 – 0.96	0.62	0.35 – 1.09
In a relationship	502	49.5	20	35.1
Race and ethnicity
White (Ref.)	729	71.9	34	59.6	Ref.	-- - --	Ref.	-- - --
Black	79	7.8	4	7.0	1.09	0.38 – 3.14	0.96	0.56 – 1.64
Latino	121	11.9	14	24.6	2.48	1.29 – 4.76	2.01	1.02 – 3.97
Multiracial or “other”	85	8.4	5	8.8	1.26	0.48 – 3.31	1.00	0.37 – 2.70
Has health insurance
No	85	8.4	8	14.0	0.56	0.26 – 1.22	0.73	0.33 – 1.64
Yes	929	91.6	49	86.0
Has a primary care providers
Yes	774	76.3	40	70.2	1.37	0.76 – 2.46	0.90	0.47 – 1.72
No	240	23.7	17	29.8
Any drug use,¹ < 3 months
No	841	89.8	42	79.2	2.29	1.14 – 4.61	1.89	0.93 – 3.85
Yes	96	10.2	11	20.8
Anal sexual behavior with casual male partners, < 3 months, excluding men who did not report anal sex with a casual male partner, valid n = 538
Exclusive bottom	122	24.7	10	22.7	0.49	0.23 – 1.04	0.48	0.22 – 1.03
Versatile (Ref.)	186	37.7	31	70.5	Ref.	-- - --	Ref.	-- - --
Exclusive top	186	37.7	3	6.8	0.10	0.03 – 0.32	0.11	0.03 – 0.36
CAS² with a casual male partner or HIV-positive or HIV-unknown main partner, < 3 months
No	633	62.4	18	31.6	3.60	2.03 – 6.38	3.26	1.82 – 5.83
Yes	381	37.6	39	68.4
	M	SD	M	SD	t	p	Adj. Odds Ratio ^a

Age in years	40.6	13.8	34.4	13.8	3.29	< .001	0.97	0.95 – 0.99
	Mdn	IQR	Mdn	IQR	U	p

Male partners in the last 12 months	4	1–10	8.0	5–15	39448.0	< .001	1.02	1.01 – 1.03
Sexual behavior with casual male partners in the last 3 months, valid n = 1071
Number of anal insertive acts	0	0–2	2	0–7.5	36719.0	< .001	1.01	0.993 – 1.04
Number of anal receptive acts	0	0–1	2	0–7	42140.0	< .001	1.03	1.01 – 1.06
Number of condomless anal insertive acts	0	0–0	1	0–3	36891.0	< .001	1.06	1.02 – 1.10
Number of condomless anal receptive acts	0	0–0	1	0–3	40033.0	< .001	1.04	1.01 – 1.08

M Mean, SD Standard Deviation, Mdn Median, IQR Interquartile Range, U Mann-Whitney U CT Chlamydia trachomatis, GC Neisseria gonorrhoeae

Adjusted for education, race, age, relationship status, having health insurance, and income Bold items are significant at p < .05

Cocaine, methamphetamine, ecstasy/MDMA, GHB/GBL, heroin/opiates, ketamine, crack

Condomless anal sex