. 2021 Jan 15;7(1):e17173. doi: 10.2196/17173

Table 3.

Interval-level characteristics and unprotected anal sex among 1311 adult Blued app users in 4 provinces in China.

Characteristic		Bivariable model					Multivariable model^a
		OR^b	95% CI	Wald χ²	P value	aOR^c		95% CI	Wald χ²	P value
Partnership initiated offline (vs online)^d		2.95	2.06-4.22	34.96	<.001	2.66		1.84-3.85	26.84	<.001
Partnership type^e
	One-time partner	Reference					Reference
	Casual partner	1.41	1.08-1.83	6.51	.01	1.16		0.87-1.54	1.06	.30
	Main partner	1.68	1.24-2.27	11.13	.001	1.39		1.00-1.93	3.75	.05
Partner’s HIV status^f
	Negative	1.92	1.38-2.68	14.80	<.001	1.57		1.09-2.27	5.81	.02
	Positive	0.67	0.35-1.31	1.35	.25	0.58		0.29-1.15	2.45	.12
	Not sure	Reference					Reference
Participant’s sexual role^g
	Receptive	Reference					Reference
	Insertive	1.42	0.93-2.16	2.68	.10	1.47		0.95-2.28	3.01	.08
	Both	0.77	0.48-1.24	1.15	.28	0.74		0.45-1.19	1.55	.21
Participant’s substance use before sex (vs no use)^h		0.72	0.39-1.32	1.13	.29	0.58		0.31-1.10	2.81	.09

^aModel log-likelihood: –876.1.

^bOR: odds ratio.

^caOR: adjusted odds ratio.

^dModel log-likelihood: –888.6.

^eModel log-likelihood: –902.0.

^fModel log-likelihood: –899.6.

^gModel log-likelihood: –905.6.

^hModel log-likelihood: –908.1.