Table 3 Mann-Whitney tests between groups predicted to be syphilis infected and uninfected using discriminant analysis on the basis of sexual behaviour.
Behaviour | z value | P | Median value for predicted uninfected group (n = 53) | Median value of predicted syphilis infected group (n = 32) |
|---|---|---|---|---|
Number of sexual partners in 12 months | 6.22 | <0.001 | 5 | 30 |
Proportion of names of sexual partners known | 6.90 | <0.001 | 60 | 5.5 |
Number of anal sex partners in 12 months | 3.56 | <0.001 | 3 | 10 |
Number of oral sex in 12 months | 5.39 | <0.001 | 5 | 30 |