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Table 1 Baseline demographic and behavioral characteristics of study participants recruited and randomized online in China, 2011 (n = 1,100)

From: Online HIV prevention intervention on condomless sex among men who have sex with men: a web-based randomized controlled trial

Characteristic Standard referral (N = 550)-No (%) Online Intervention (N = 550)-No (%)
Age –Years
  ≤ 20 32 (5.8) 24 (4.4)
 21–30 336 (61.1) 351 (63.8)
 31–40 150 (27.3) 137 (24.9)
  ≥ 41 32 (5.8) 38 (6.9)
Educational
 Junior high school or below 20 (3.6) 17 (3.1)
 Senior High school 102 (18.5) 84 (15.3)
 College or above 428 (77.8) 449 (81.6)
Annual income (US dollar)
 No income 49 (8.9) 37 (6.7)
 Less than $5,351 204 (37.1) 160 (29.1)
 $5,351 to 12,485 198 (36.0) 242 (44.0)
 $12,485 or above 99 (18.0) 111 (20.2)
Ethnicity
 Han 539 (98.0) 531 (96.5)
 Minority 11 (2.0) 19 (3.5)
Marital status
 Currently married 78 (14.2) 56 (10.2)
 Singlea 472 (85.8) 494 (89.8)
Sexual orientation   
 Homosexual 428 (77.8) 429 (78.0)
 Bisexual/heterosexual/other 122 (22.2) 121 (22.0)
Places of meeting sex partner/s
 Internet 488 (88.7) 480 (87.3)
 Other 62 (11.3) 70 (12.7)
Perception of HIV epidemic among MSM
 Nothing serious 191 (34.7) 195 (35.5)
 Serious/very serious 359 (65.3) 355 (64.5)
HIV tested in the previous six months
 Yes 148 (26.9) 126 (22.9)
 No 402 (73.1) 424 (77.1)
Had anal sex with male in the previous three months
 Yes 427 (77.6) 399 (72.5)
 No 123 (22.4) 151 (27.5)
Group sex with male in the previous three months
 Yes 76 (13.8) 67 (12.2)
 No 474 (86.2) 483 (87.8)
Condomless anal sex with male in the previous three months (overall condomless sex)  
 Yes 265 (48.2) 243 (44.2)
 No 285 (51.8) 307 (55.8)
Condomless anal sex with male regular partner/s in the previous three months  
 Yes 213 (54.9) 192 (53.3)
 No 175 (45.1) 168 (46.7)
Condomless anal sex with male casual partner/s in the previous three months  
 Yes 109 (34.1) 105 (37.0)
 No 211 (65.9) 179 (63.0)
  1. aIncludes divorced and widowed
  2. MSM men who have sex with men