Internet-Based Sex-Seeking Behavior Promotes HIV Infection Risk: A 6-Year Serial Cross-Sectional Survey to MSM in Shenyang, China

Table 4

Univariate and multivariate logistic regression analysis of factors associated with HIV .

Variables	Using Internet MSM ()			Non-Internet MSM ()
	HIV prevalence (%)	cOR (95% CI)	aOR (95% CI)	HIV prevalence (%)	cOR (95% CI)	aOR (95% CI)
Age
≤25 years	11.0 (66/600)	Ref		9.5 (40/422)	Ref
>25 years	16.5 (66/400)	1.6 (1.1–2.3)	NA	11.3 (63/559)	1.2 (0.8–1.8)	NA
Monthly income
None	10.3 (33/321)	Ref		8.7 (19/219)	Ref
1–300 $	13.1 (42/321)	1.3 (0.8–2.1)	NA	10.6 (51/480)	1.3 (0.7–2.2)	NA
>300 $	15.9 (57/358)	1.7 (1.1–2.6)	NA	11.7 (33/282)	1.4 (0.8–2.5)	NA
Education level
Junior high school and below	14.8 (34/229)	Ref		10.2 (55/539)	Ref
Senior high school and above	12.7 (98/771)	0.8 (0.5–1.3)	NA	10.9 (48/442)	1.1 (0.7–1.6)	NA
Residence place
Shenyang	9.0 (33/367)	Ref	Ref	10.6 (29/273)	Ref	Ref
Other cities	15.6 (99/633)	1.9 (1.2–2.9)	1.9 (1.3–2.9)	10.5 (74/708)	1.0 (0.6–1.6)	1.0 (0.6–1.6)
Ethnicity
Non-Han	11.5 (17/148)	Ref	Ref	11.8 (19/161)	Ref	Ref
Han	13.5 (115/852)	1.2 (0.7–2.1)	1.2 (0.7–2.1)	10.2 (84/820)	0.9 (0.5–1.4)	0.8 (0.5–1.4)
Marriage status
Single	12.5 (102/819)	Ref	Ref	8.7 (56/645)	Ref	Ref
Others	16.6 (30/181)	1.4 (0.9–2.2)	1.2 (0.7–1.9)	14.0 (47/336)	1.7 (1.1–2.6)	1.7 (1.1–2.5)
Sexual orientation
Bisexual orientation	12.5 (35/281)	Ref	Ref	8.5 (31/366)	Ref	Ref
Homosexual orientation	13.6 (96/704)	1.1 (0.7–1.7)	1.2 (0.8–1.9)	12.0 (70/584)	1.5 (1.0–2.3)	1.5 (1.0–2.4)
Heterosexual or not sure	6.7 (1/15)	0.5 (0.1–3.9)	0.5 (0.1–4.1)	6.5 (2/31)	0.7 (0.2–3.3)	0.7 (0.2–3.2)
Age of male sexual behavior debut
<18 years	12.7 (29/229)	Ref	Ref	13.5 (21/155)	Ref	Ref
18–25 years	12.1 (82/678)	1.0 (0.6–1.5)	0.9 (0.6–1.4)	8.9 (53/598)	0.6 (0.4–1.1)	0.6 (0.4–1.0)
>25 years	22.2 (20/90)	2.0 (1.1–3.7)	1.5 (0.8–3.1)	13.3 (29/218)	1.0 (0.5–1.8)	0.9 (0.5–1.8)
Condom use with steady male sex partners in the past year
Always use	9.3 (25/268)	Ref	Ref	5.4 (11/205)	Ref	Ref
Occasionally or never use	16.2 (60/371)	1.9 (1.1–3.1)	1.9 (1.2–3.1)	14.0 (54/385)	2.9 (1.5–5.6)	3.0 (1.5–5.9)
Condom use with casual male sex partners in the past year
Always use	11.1 (47/425)	Ref	Ref	9.2 (27/294)	Ref	Ref
Occasionally or never use	16.7 (64/384)	1.6 (1.1–2.4)	1.7 (1.1–2.6)	12.2 (49/402)	1.4 (0.8–2.3)	1.4 (0.9–2.4)
Preferred intercourse sexual roles with male partners
Insertive anal sexual role	8.5 (25/295)	Ref	Ref	6.8 (23/339)	Ref	Ref
Both insertive and receptive roles	14.5 (72/495)	1.8 (1.1–3.0)	2.0 (1.3–3.3)	13.7 (65/475)	2.2 (1.3–3.6)	2.3 (1.4–3.8)
Receptive anal sexual role	17.2 (35/204)	2.2 (1.3–3.9)	2.5 (1.5–4.5)	9.5 (14/148)	1.4 (0.7–2.9)	1.5 (0.7–3.1)
Number of male sexual partners in the past year
>10	11.8 (32/272)	Ref	Ref	8.7 (27/311)	Ref	Ref
4–10	15.5 (53/343)	1.4 (0.9–2.2)	1.4 (0.9–2.3)	11.1 (33/296)	1.3 (0.8–2.3)	1.3 (0.8–2.2)
0–3	12.2 (47/385)	1.0 (0.7–1.7)	1.1 (0.7–1.7)	11.5 (43/374)	1.4 (0.8–2.3)	1.3 (0.8–2.3)
STD symptoms in the past year
No	12.9 (122/946)	Ref	Ref	10.3 (97/946)	Ref	Ref
Yes	18.5 (10/54)	1.5 (0.8–3.1)	1.5 (0.7–3.0)	17.1 (6/35)	1.8 (0.7–4.5)	1.8 (0.7–4.4)
Syphilis infection
Negative	10.5 (93/886)	Ref	Ref	8.0 (69/863)	Ref	Ref
Positive	34.2 (39/114)	4.4 (2.9–6.9)	4.3 (2.8–6.7)	28.8 (34/118)	4.7 (2.9–7.4)	4.7 (2.9–7.5)

a: adjusted for age, monthly income, and education level. cOR: crude odds ratio. aOR: adjusted odds ratio. , , . NA, not applicable.