Table 2.

Seroadaptation practices by select sexual behaviors and substance use of Black men who have sex with men, Baltimore, Chicago, Milwaukee, and New York City

Characteristic	Total		100 % condom use		Serosorting		Condom serosorting		Sero-positioning		No strategy		Χ2/F-test statistic (df), P-value
	N*	%	N	%	N	%	N	%	N	%	N	%
Main partner													Χ2(4 df) = 20.30, <0.001
No	332	39.8	43	12.9	71	21.4	21	6.3	70	21.1	127	38.3
Yes	503	60.2	45	8.9	150	29.8	39	7.8	60	11.9	209	41.6
Alcohol/drugs with sex													Χ2(4 df) = 16.85, 0.002
No	281	33.7	39	13.9	88	31.3	20	7.1	46	16.4	88	31.3
Yes	553	66.3	49	8.9	133	24.1	40	7.2	83	15.0	248	44.8
	Mean	SD	Mena	SD	Mean	SD	Mean	SD	Mean	SD	Mean	SD
Number of male partners	6.3	11.2	4.1	5.5	3.9	4.1	6.4	6.7	5.4	6.2	8.8	16.4	F(4 df) = 7.88, <0.001
Heavy alcohol use													Χ2(4 df) = 8.13, 0.087
No	753	90.4	85	11.3	201	26.7	57	7.6	112	14.9	298	39.6
Yes	80	9.6	3	3.8	20	25.0	3	3.8	17	21.3	37	46.3
Marijuana													Χ2 = 5.97(4 df) 0.201
No	376	45.1	46	12.2	110	29.3	25	6.7	56	14.9	139	37.0
Yes	457	54.9	42	9.2	111	24.3	35	7.7	73	16.0	196	42.9
Crack cocaine
No	582	70.0	64	11.0	162	27.8	47	8.1	76	13.1	233	40.0	Χ2(4 df) = 11.25, 0.024
Yes	250	30.0	24	9.6	58	23.2	13	5.2	53	21.2	102	40.8
Cocaine													Χ2(4 df) = 10.89, 0.028
No	660	79.3	74	11.2	186	28.2	51	7.7	98	14.9	251	38.0
Yes	172	20.7	14	8.1	34	19.8	9	5.2	31	18.0	84	48.8
Poppers													Χ2(4 df) = 6.44, 0.169
No	692	83.1	79	11.4	190	27.5	48	6.9	106	15.3	269	38.9
Yes	141	16.9	9	6.4	31	22.0	12	8.5	23	16.3	66	46.8
Erectile dysfunction drug													Χ2(4 df) = 3.18, 0.528
No	741	89.1	82	11.1	196	26.5	54	7.3	117	15.8	292	39.4
Yes	91	10.9	6	6.6	24	26.4	6	6.6	12	13.2	43	47.3
Ecstasy													Χ2(4 df) = 2.74, 0.602
No	753	90.4	81	10.8	205	27.2	54	7.2	115	15.3	298	39.6
Yes	80	9.6	7	8.8	16	20.0	6	7.5	14	17.5	37	46.3
Heroin													Χ2(4 df) = 4.96, 0.291
No	774	92.9	77	10.0	205	26.5	56	7.2	120	15.5	316	40.8
Yes	59	7.1	11	18.6	16	27.1	4	6.8	9	15.3	19	32.2
Methamphetamine													Χ2(4 df) = 10.49, 0.033
No	791	95.1	87	11.0	213	26.9	53	6.7	120	15.2	318	40.2
Yes	41	4.9	1	2.4	8	19.5	7	17.1	9	22.0	16	39.0