Table 2

Multivariate association between rectal douching and behavioural characteristics and HIV prevalence among Chinese MSM (n=1365)

VariableRectal douching in the past 6 months
% (n/total)Adjusted model
aOR (95% CI)		P value*
Predominant sexual role during AI in the past 6 months†   
 Top12.9 (54/420)Ref 
 Versatile54.4 (196/360)9.2 (6.4 to 13.3)<0.001
 Bottom62.8 (268/427)14.0 (9.8.0 to 20.2)<0.001
Main venue for seeking male sexual partners   
 Internet app41.0 (478/1165)1.4 (1.0 to 1.9)0.046
 Non-internet app33.5 (67/200)Ref 
No of male sexual partners in the past 6 months   
 ≥245.2 (371/820)1.8 (1.4 to 2.2)<0.001
 0–131.9 (174/545)Ref 
CAI in the past 6 months   
 Yes43.0 (253/588)1.3 (1.0 to 1.6)00.038
 No37.6 (292/777)Ref 
Rectal bleeding in the past 6 months   
 Yes50.6 (236/466)2.0 (1.6 to 2.6)<0.001
 No34.1 (309/905)Ref 
Recreational drug use in the past 6 months   
 Yes58.8 (273/464)3.2 (2.6 to 4.1)<0.001
 No30.2 (272/901)Ref 
Lifetime HIV testing history   
 Yes43.4 (439/1011)1.7 (1.3 to 2.2)<0.001
 No29.9 (106/354)Ref 
Average HIV test interval‡   
 ≤6 months49.0 (237/484)1.8 (1.3 to 2.4)<0.001
 6–12 months42.4 (97/229)1.3 (0.9 to 1.9)0.105
 ≥12 months or interval is not fixed35.2 (105/298)Ref 
HIV status   
 Self-testing positive56.5 (26/46)1.9 (1.0 to 3.4)0.038
 Self-testing negative39.3 (519/1319)Ref 

  • Recreational drugs: psychoactive drug to alter one's mental state in a way that modifies emotions, perceptions and feelings for recreational purposes, such as methamphetamine, cocaine, ketamine, bath salts and rush poppers.

  • *Multivariate logistic regression models were controlled for age, monthly income and occupation.

  • †There were 158 participants who had not anal intercourse in the past 6 months.

  • ‡There were 354 participants who had not tested for HIV previously.

  • aOR, adjusted OR; CAI, condomless anal intercourse; MSM, men who have sex with men; Ref, referent.