Associations between Cognitive, Sociocontextual, and Affective Variables and Unprotected Anal Intercourse among Men Who Have Sex with Men—A Comparative Study Conducted in Two Chinese Cities

Table 1

Comparison of background factors between Shenzhen and Hong Kong respondents.

	All; (𝑛=535)	Shenzhen; (𝑛=102)	Hong Kong; (𝑛=433)	Shenzhen versus Hong Kong
	Col%	Col%	Col%	ORu^1 (95% CI)	ORadj^2 (95% CI)
Sociodemographics
Age group
18–24	35.3	20.2	38.8	1.00	1.00
25–34	53.0	70.7	49.0	2.77 (1.62, 4.74) **	2.35 (1.25, 4.40) **
35–52	11.7	9.1	12.2	1.43 (0.61, 3.32)	0.58 (0.20, 1.70)
Education level
Junior high and below	6.2	16.0	3.9	1.00	1.00
Senior high	55.2	71.0	51.5	0.34 (0.16, 0.70) **	0.66 (0.28, 1.55)
University and above	38.6	13.0	44.6	0.07 (0.03, 0.17) **	0.11 (0.04, 0.29) **
Marital status
Never married	95.9	87.9	97.7	1.00	1.00
Ever married (e.g., divorced, widow)	4.1	12.1	2.3	5.83 (2.44, 13.93) **	7.72 (2.34, 25.48) **
Employment
Full- or part-time	74.6	74.7	74.6	1.00	1.00
Not employed	9.2	23.2	6.0	3.86 (2.09, 7.14) **	3.21 (1.53, 6.75) **
Student	16.2	2.0	19.4	0.10 (0.02, 0.43) **	0.18 (0.04, 0.80) *
Local residence
No	3.8	12.0	1.8	1.00	1.00
Yes	96.2	88.0	98.2	0.14 (0.05, 0.35) **	0.19 (0.07, 0.58) **
Sexual orientation and sexual behaviors
UAI with men in the last 12 months
No	59.8	59.8	59.8	1.00	1.00
Yes, UAI	40.2	40.2	40.2	1.00 (0.64, 1.55)	1.09 (0.64, 1.85)
Number of MSM partners in the last 12 months
1–3	55.0	50.0	56.1	1.00	1.00
≥4	45.0	50.0	43.9	1.28 (0.83, 1.97)	1.24 (0.74, 2.07)
Had sex with females in the last 12 months
No	92.5	74.5	96.8	1.00	1.00
Yes	7.5	25.5	3.2	10.24 (5.11, 20.50) **	5.46 (2.33, 12.81) **
Sexual orientation
Homosexual	77.3	59.4	81.5	1.00	1.00
Bisexual	18.7	33.7	15.2	3.03 (1.85, 4.98) **	2.49 (1.33, 4.65) **
Not sure	3.9	6.9	3.2	2.94 (1.14, 7.59) *	2.40 (0.73, 7.88)
STD infection
Self-reported STD (last 12 months)
No	96.0	88.8	97.7	1.00	1.00
Yes	4.0	11.2	2.3	5.35 (2.20, 12.98) **	6.96 (2.35, 20.61) **

^∗∗𝑃 value < 0.01, ^∗𝑃 value < 0.05.
¹Odds ratio of univariate analysis.
²For the analysis of the set of sociodemographic variables, adjusted odds ratios were obtained by applying stepwise multivariate analysis using variables with 𝑃<0.05 in the univariate analysis as candidates. Regarding the rest of the tables, adjusted odds ratios were obtained from multivariate analysis adjusted for those sociodemographic variables which were found to be significant in the stepwise multivariate analysis.