Table 1

 Demographics, sexual health service use, STIs, and sexual behaviour: comparing MSM in the GMSHS and MSM in Natsal1,2

GMSHSNatsal London MSM onlyNatsal all MSM
(n = 1406)(n = 46.1) (weighted*), (n = 79) (unweighted)(n = 156.8) (weighted*), (n = 176) (unweighted)
*Weighting for the inverse probability of selection and to match age/gender/region distribution of British population according to the Office for National Statistics (ONS) population estimates for mid-1999.7
†Odds ratios and 95% confidence intervals use weighted data.
Median age323232
% not white12.9%22.9%9.2%
Odds ratio (95% CI)†12.01 (1.02 to 3.95)0.69 (0.40 to 1.17)
% reside in Inner London78.5%61.3%18.0%
Odds ratio (95% CI)10.43 (0.22 to 0.83)0.06 (0.04 to 0.09)
% no education after the age of 1613.7%12.7%18.1%
Odds ratio (95% CI)10.92 (0.43 to 1.98)1.39 (0.87 to 2.22)
% not currently employed13.8%30.5%29.2%
Odds ratio (95% CI)12.74 (1.50 to 5.00)2.57 (1.73 to 3.82)
% attended GUM clinic in the last year41.7%17.5%18.6%
Odds ratio (95% CI)10.30 (0.16 to 0.56)0.32 (0.20 to 0.51)
% ever tested for HIV68.3%47.2%43.9%
Odds ratio (95% CI)10.41 (0.23 to 0.74)0.36 (0.25 to 0.53)
Of those testing, % who test for HIV in last year30.8%29.0%34.8%
Odds ratio (95% CI)10.92 (0.44 to 1.93)1.20 (0.68 to 2.11)
% STI in the last year19.2%5.2%1.6%
Odds ratio (95% CI)10.23 (0.09 to 0.61)0.07 (0.03 to 0.18)
% 1+ male sex partners in the last year96.6%88.5%83.6%
Odds ratio (95% CI)10.27 (0.11 to 0.67)0.18 (0.10 to 0.32)
% >5 male sex partners in the last year52.9%29.1%19.2%
Odds ratio (95% CI)10.37 (0.21 to 0.63)0.21 (0.14 to 0.33)
% 1+ UAI partners in the last year41.8%31.8%35.3%
Odds ratio (95% CI)10.65 (0.37 to 1.14)0.76 (0.53 to 1.10)
% >5 UAI partners in the last year3.2%0.6%2.2%
Odds ratio (95% CI)10.19 (0.23 to 1.43)0.68 (0.21 to 2.23)