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Table 3 Venue for seeking sex partners/Sexual behaviors among MSM who use nitrite inhalants and among MSM who do not use nitrite inhalants in China

From: Association of nitrite inhalants use and unprotected anal intercourse and HIV/syphilis infection among MSM in China: a systematic review and meta-analysis

Study Venue for seeking sex partners/Sexual Behaviors nitrite inhalants users nitrite inhalants nonusers P-value
N %a N %a
Wang et al. (2017) [26] Sexual role      0.001
Insertive 41 27.3 144 42.9  
Receptive/Versatile 109 72.7 192 57.1  
No. of sex partners, P6M      < 0.001
< 2 28 18.4 136 38.0  
≥2 124 81.6 222 62.0  
CRAI, P6M 57 52.3 114 52.5 0.967
Seeking male sex partners via the Internet 145 95.4 267 74.6 < 0.001
Zhao et al. (2017) [29] Sexual role      0.013
Insertive 93 30.7 431 38.4  
Receptive/Versatile 210 69.3 690 61.6  
Gay apps usersc 220 72.6 604 53.9 < 0.001
Xu et al. (2017) [14] Sexual role      0.003
Insertive 65 26.4 291 36.6  
Receptive/Versatile 181 73.6 503 63.4  
No. of sex partners, P6M      < 0.001
≤1 66 26.8 467 58.8  
≥2 180 73.2 327 41.2  
CAI with casual partners, P6M 83 33.7 152 19.1 < 0.001
Venue for seeking sex partners      0.001
Internet 202 82.1 570 71.8  
Othersd 44 17.9 224 28.2  
Duan et al. (2017) [15] Had receptive sexual intercourse, P6M 128 62.4 821 47.5 < 0.001
Multiple sex partners (≥2), P6M 157 76.6 828 47.9 < 0.001
Seeking male sex partners by Internet 164 86.3 704 60.2 < 0.001
Zhang et al. (2016) [21] Sexual role      < 0.001
Insertive 268 30.0 863 40.9  
Receptive/Versatile 626 70.0 1249 59.1  
No. of male sex partners, P3M      < 0.001
≤1 372 38.7 1507 57.4  
≥2 589 61.3 1120 42.6  
CRAI, P3M 298 31.0 547 20.8 < 0.001
Most common venue for seeking male partners      < 0.001
Internet 834 86.8 2004 76.3  
Othere 127 13.2 623 23.7  
Chen et al. (2016) [24] Sexual role, recently      0.800
Insertive 44 36.1 262 37.3  
Receptive/Versatile 78 63.9 441 62.7  
No. of casual partners ≥1, P3M 68 55.7 310 44.1 0.017
Multiple sex partners (≥2), P3M 45 36.9 188 26.7 0.023
Li et al. (2014) [25] Had a casual sex partner, P3M 135 71.4 126 59.7 0.014
Venue for seeking sex partners      < 0.001
Internet 158 83.6 130 61.6  
Othersf 31 16.4 81 38.4  
Li (2014) [19] Sexual role      0.238
Insertive 186 29.5 695 32.0  
Receptive/Versatile 445 70.5 1480 68.0  
No. of partners, P6M      0.003
≤3 372 59.0 1423 65.4  
> 3 259 41.0 752 34.6  
Seeking sex partners via the Internet 554 87.8 1470 67.6 < 0.001
Chu (2013)g [17] Sexual role      0.050
Insertive 26 21.7 155 30.7  
Receptive/Versatile 94 78.3 350 69.3  
Seeking sex partners via the Internet 86 71.7 252 49.9 < 0.001
  1. N/A Not available; “one for night”: one-night stands, CRAI Condomless receptive anal intercourse, CAI Condomless anal intercourse, P3M: in the past 3 months; P6M: in the past 6 months
  2. a The percent of non-missing observations. Percentages may not add up to 100 because of rounding
  3. b Venues for seeking sex partners included parks, public toilets, bars, clubs, and bathhouses
  4. c They had used gay smart phone-based sex-seeking applications in the last six months
  5. d Venues for seeking sex partners included parks, public toilets, bathhouses, bars, dance halls, and clubs
  6. e Venues for seeking male partners included parks, bathrooms, sauna and other public places
  7. f Venues for seeking sex partners included parks and bathrooms
  8. g This data was extracted from the baseline questionnaire of this study