Table 2

Mean risk scores, positivity rates, estimated Gini coefficients and corresponding 95% CIs for gonorrhoea, chlamydia and syphilis in MSM participating in the Amsterdam Cohort Studies between 2009 and 2019 (n=959, n visits=12 274)

Total (n visits=12 274)
Risk score, mean (SD)0.82 (0.74)
STI diagnoses % positive Gini coefficient 95%CI
 Gonorrhoea5.10.440.40 to 0.48
 Chlamydia4.60.400.36 to 0.44
 Syphilis0.70.430.31 to 0.55
 STIs9.40.400.38 to 0.43
 Anal gonorrhoea2.70.530.48 to 0.58
 Anal STI5.40.460.43 to 0.50
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