Table 4

Multivariate logistic stepwise regression results with anxiety as the dependent variable

Variable	b	S	χ²	P value	OR (95% CI)
The no of female sexual partners in the past 6 months
MSMO (0)	Ref
MSMW (>0)	0.53	0.16	11.36	<0.01	1.71 (1.25 to 2.33)
Age
18–25 years old	Ref
26–35 years old	−0.32	0.14	5.25	0.02	0.73 (0.56 to 0.96)
Older than 35 years old	−0.43	0.17	6.90	<0.01	0.65 (0.47 to 0.90)
Educational level
Primary or below	Ref
Junior high	−0.43	0.35	1.51	0.22	0.65 (0.33 to 1.29)
Senior high	−0.76	0.33	5.43	0.02	0.47 (0.25 to 0.89)
Junior college	−0.83	0.33	6.32	0.01	0.44 (0.23 to 0.83)
College or above	−1.29	0.33	15.36	<0.01	0.28 (0.15 to 0.53)
HIV knowledge score
<11	Ref
≥11	−0.30	0.14	4.48	0.03	0.74 (0.57 to 0.98)
Perceived the rate of HIV infection among MSM in the city where they live
High	Ref
Moderate and low	−0.40	0.14	8.41	<0.01	0.67 (0.51 to 0.88)
Looking for sexual partners through the internet in the past 6 months
Never	Ref
Occasionally	−0.09	0.14	0.42	0.52	0.91 (0.69 to 1.21)
Sometimes/always	0.36	0.15	5.73	0.02	1.44 (1.07 to 1.94)
Alcohol use in the past month
Never	Ref
Less than once/week	−0.47	0.15	10.21	<0.01	0.63 (0.47 to 0.83)
At least once/week	−0.19	0.18	1.12	0.29	0.83 (0.59 to 1.17)
At least three times/week	0.08	0.20	0.17	0.68	1.09 (0.73 to 1.62)
Almost every day	0.01	0.29	0.01	0.97	1.01 (0.57 to 1.79)
Commercial sexual services in the past 6 months
No	Ref
Yes	0.47	0.23	4.32	0.04	1.60 (1.03 to 2.50)

MSM, men who have sex with men; MSMO, men who have sex with men only; MSMW, men who have sex with men and women.