Table 4.

GEE Logistic Regression Models: Partial Condom Use among Those Who Had Vaginal Sex with a Main Partner (4,865 partnerships) and a Non-Main Partner (4,408 partnerships)

Predictors		MAIN PARTNERS								NON-MAIN PARTNERS
		Males (2,304 partnerships)				Females (2,561 partnerships)				Males (2,776 partnerships)				Females (1,632 partnerships)
		Odds Ratio	P*	[95% CI]		Odds Ratio	P*	[95% CI]		Odds Ratio	P*	[95% CI]		Odds Ratio	P*	[95% CI]
RESPONDENT
Education	<HS	0.75	0.0144	0.59	0.94	0.70	0.0041	0.56	0.89
	HS Grad +	Ref	N/A	N/A	N/A	Ref	N/A	N/A	N/A
Respondent had sex while high
	Ever	1.62	<0.0001	1.30	2.00	1.34	0.0112	1.07	1.67	1.44	0.0012	1.15	1.79	0.98	.08715	0.75	1.28
	Never	Ref	N/A	N/A	N/A	Ref	N/A	N/A	N/A	Ref	N/A	N/A	N/A	N/A	Ref	N/A	N/A
PARTNER
Partner had STI symptoms prior 3 months
	Yes	1.70	0.0001	1.30	2.22	1.03	0.8555	0.75	1.42
No or not known		Ref	N/A	N/A	N/A	Ref	N/A	N/A	N/A
Partner was IDU
	Ever	0.95	0.8876	0.45	1.98	1.83	0.0090	1.16	2.89
	Never	Ref	N/A	N/A	N/A	Ref	N/A	N/A	N/A
PARTNERSHIP
Length of the sexual partnership
1 month or longer		1.08	0.5667	0.84	1.38	1.27	0.0490	1.00	1.62
	< 1 month	Ref	N/A	N/A	N/A	Ref	N/A	N/A	N/A
Number of protected vaginal sex acts		1.00	0.0654	0.9997	1.01	1.00	0.5861	0.9972	1.01	1.01	0.1433	0.9959	1.03	0.99	0.7097	0.96	1.04
Percent protected vaginal sex acts
1%–99% condom use		2.10	<0.0001	1.67	2.64	1.84	<0.0001	1.47	2.30	1.71	<0.0001	1.37	2.14	2.37	<0.0001	1.83	3.08
100% condom use		Ref	N/A	N/A		Ref	N/A	N/A	N/A	Ref	N/A	N/A	N/A	Ref	N/A	N/A	N/A
How long partners knew each other before initiating sex
Less than 1 month										1.30	0.0084	1.07	1.58	1.06	0.6813	0.81	1.39
1 month or longer										Ref	N/A	N/A	N/A	Ref	N/A	N/A	N/A
Discussed condoms with partner
	Ever									1.31	0.0243	1.04	1.66	1.37	0.0819	0.96	1.95
Never or not known										Ref	N/A	N/A	N/A	Ref	N/A	N/A	N/A