Table 3.

Hurdle model predicting CAS with Casual Partners Partnered men (n = 53,934)

	Any CAS with Casual Partners (Binomial)		Frequency of CAS with Casual Partners (Count)
	Odds Ratio	95% CI	Rate Ratio	95% CI
Age	0.989**	(0.987, 0.991)	0.996**	(0.994, 0.998)
Race/Ethnicity (ref = White)
African-American	0.84**	(0.78, 0.90)	0.73**	(0.67, 0.79)
Asian	0.64**	(0.59, 0.71)	0.58**	(0.52, 0.65)
Latino	0.90**	(0.85, 0.95)	0.81**	(0.77, 0.87)
Other	0.97	(0.91, 1.04)	1.07	(0.99, 1.15)
Region (ref = Northeast)
Midwest	1.20**	(1.12, 1.27)	0.97	(0.90, 1.04)
South	1.16**	(1.10, 1.22)	0.99	(0.93, 1.05)
West	1.15**	(1.09, 1.22)	1.07*	(1.01, 1.14)
PrEP, HIV (ref = Negative/Unknown, no PrEP)
HIV positive	1.92**	(1.81, 2.02)	1.73**	(1.64, 1.83)
Current PrEP prescription	2.89**	(2.73, 3.07)	1.95**	(1.85, 2.05)
Sexual Orientation (ref Gay)
Bisexual	1.06	(0.99, 1.13)	1.15**	(1.06, 1.23)
Other	0.78**	(0.68, 0.89)	1.20*	(1.04, 1.39)
Relationship Agreement (ref = Monogamous)
Monogamish	2.53**	(2.30, 2.79)	0.47**	(0.40, 0.55)
Open	4.48**	(4.22, 4.76)	0.59**	(0.54, 0.66)
Main Partner Age	1.003*	(1.000, 1.005)	1.005**	(1.003, 1.007)
Relationship Length > 2 years	0.61**	(0.58, 0.64)	0.99	(0.95, 1.04)
Main Partner HIV Status (ref = Negative)
Positive	1.07*	(1.01, 1.13)	1.17**	(1.11, 1.24)
Unknown	1.75**	(1.58, 1.95)	1.20**	(1.08, 1.33)
Substance Use (ref = no MJ, no CD)
MJ no CD	1.34**	(1.23, 1.44)	1.08	(0.94, 1.25)
CD no MJ	1.70**	(1.40, 2.05)	1.17	(0.87, 1.59)
MJ and CD	2.08**	(1.83, 2.36)	1.09	(0.91, 1.32)
Interactions
Monogamish*MJ no CD	0.85*	(0.73, 0.99)	1.03	(0.80, 1.32)
Monogamish*CD no MJ	1.43*	(1.04, 1.95)	1.48*	(1.01, 2.14)
Monogamish*MJ & CD	1.08	(0.87, 1.36)	1.72**	(1.31, 2.24)
Open*MJ no CD	0.86**	(0.78, 0.96)	1.01	(0.87, 1.18)
Open*CD no MJ	1.68**	(1.34, 2.12)	1.82**	(1.34, 2.48)
Open*MJ & CD	1.20*	(1.03, 1.40)	1.80**	(1.49, 2.20)

^*p ≤ .05

^**p ≤ .01

NOTE: MJ = Marijuana; CD = Club Drug; CAS = Condomless anal sex