Table 3

Proportions and proportion trends in sexual behaviour and HIV transmission knowledge in MSM and HRH attended per year

Sexual behaviourHIV transmission knowledge
Condom use in last sexual intercourse with:Age at first sex* median (IQR)By unprotected sex
Yes (%)
Vertical transmission
Yes (%)
Regular partner
Yes (%)
Occasional partner
Yes (%)
MSM†‡
 Year (n§)
 2007 (16)57.1410 (9–13)93.7562.50
 2008 (59)78.3812 (11–15)10042.37
 2009 (87)57.1412 (12–15)97.7013.95
 2010 (83)62.5013 (12–15)97.6037.35
 2011 (77)76.0912 (14–15)100
 2012 (57)58.0611 (14–15)100
 APr test for trend¶0.96 (0.79 to 1.18)**NA††1 (1 to 1.01)0.95 (0.81 to 1.12)
 P valueNA††0.7330.0130.1870.584
 Variable missing data (%)8.535.80<0.5<0.5
HRH†
 Year (n§)
 2007 (111)13.843515 (14–17)90.9069.10
 2008 (123)13.3337.9316 (14–17)95.0458.68
 2009 (142)14.1136.5815 (14–17)93.6270.92
 2010 (87)9.5237.5016 (14–17)93.9064.63
 2011 (72)814.2815 (13–16)97.22
 2012 (66)18.6014.2816 (14–17)100
 APr test for trend*0.94 (0.88 to 0.99)0.79 (0.63 to 0.98)¶NA††1 (0.99 to 1.01)0.91 (0.83 to 1)
 P value0.0420.0330.3450.1870.056
 Variable missing data (%)14.0622.95<0.5<0.5<0.5
  • §Sample size of MSM and HRH attended in the specific year.

  • *Sex with penetration.

  • †The sexual behaviour questionnaire was not fully implemented in years 2005–2006.

  • ‡Sexual behaviour data are from last male partner either occasional or regular.

  • ¶Adjusted proportion (APr) test for trend with 95% CI using a Poisson binomial model with year as an ordered categorical variable and adjusted for those sociodemographic variables with a p value <0.2 in the univariate test (age, sex, STI clinic origin, having a regular partner, country of birth, education and marital status).

  • **Mantel-Haenszel extension for linear trend adjusted for age was used when the Poisson model test for clustered data was not of sufficient rank to be performed.

  • ††Not applicable.

  • HRH, high-risk heterosexuals; MSM, men who have sex with men; STI, sexually transmitted infections.