Table 3.

LCA. Estimated effect of demographic and behavioral characteristics on class membership in the four-class model among U.S. MSM recruited online

Referent outcome group: No/Low sexual dysfunction	Erection problems and performance anxiety		Low desire and pleasure		High sexual dysfunction and sexual pain
Characteristics	B	AOR	B	AOR	B	AOR
Age	0.02**	1.02	−0.07***	0.93	−0.03***	0.97
Relationship status
Single (no steady partner)	0.29**	1.34	0.31**	1.36	0.39***	1.48
Race/Ethnicity
African American	−0.16		−0.37		−0.10
Hispanic	−0.51		−0.36		−0.03
Asian	0.07		−0.24		0.65
Mixed/Other race	0.15		0.11		−0.03
Income
Low income	0.01		−0.11		0.09
High income	−0.25		−0.12		−0.20
Health factors
Mental health factor	0.34		1.06***	2.89	1.37***	3.94
Physical health factor	0.38***	1.46	0.38**	1.46	0.40***	1.49
HIV status
HIV positive	−0.12		−0.06		0.09
Past year characteristics
Any STI	0.23		0.23		0.34**	1.40
Drug Factor 1	0.25		0.15		0.33**	1.39
Drug Factor 2	0.01		0.27		0.06
Drug Factor 3	1.62***	5.05	−0.81**	0.44	1.50***	4.48
Drug Factor 4	1.12***	3.06	−0.97***	0.38	1.13***	3.09

Multinomial logistic regression models were performed for the latent class models for MSM respondents with lifetime male sexual partners and at least 1 male partner during the 12 month period prior to the survey. Three multinomial logistic regression models were run separately for each latent class. LCA analyses accounted for missing data on SD items using a maximum-likelihood estimation routine.

Age: continuous variable. Relationship status: single (unmarried/no domestic partner) vs. all other (married/domestic male partner; married/domestic female partner; divorced/separated/widowed from man; divorced/separated/widowed from woman). Income: low (<$10,000 to $29,999), medium ($30,000 to $49,999), and high ($50,000 to $100,000+), with medium a referent group. Mental Health Factor: lifetime diagnoses of depression, anxiety or bipolar disorder. Physical Health Factor: lifetime diagnoses of hypertension, high cholesterol, heart disease, diabetes. HIV-Positive: self-reported and dichotomous (yes, no). Any sexually transmitted infection (STI) in the past year: defined as a diagnosis by a doctor or nurse with herpes, human papiloma virus, Chlamydia, gonorrhea, syphilis, chancroid, or non-gonoccocal urethritis. Drug Factor 1: “club drugs” ketamine, crystal methamphetamine (smoked, snorted, swallowed, and injected), ecstasy, gamma hydroxy butyrate; Drug Factor 2: alcohol, marijuana, poppers, cocaine (smoked, snorted, or swallowed), downers; Drug Factor 3: sildenafil, vardenafil, or tadalafil (all prescription); Drug Factor 4: sildenafil, vardenafil, or tadalafil (all non-prescription). Drug categories are not mutually exclusive.

^**P ≤ 0.01;

^***P ≤ 0.001.

B = beta coefficient; AOR = adjusted odds ratio.