Characteristics associated with early syphilis in multivariate analysis
| Cases (n=53), n (%) | Controls (n=90), n (%) | OR (95% CI)* | p Value | |
| Low educational attainment (high school and below) | 27 (50.9) | 25 (27.8) | 5.24 (1.90 to 14.42) | 0.001 |
| Alcohol intake before or during sex | 27 (50.9) | 59 (65.6) | 0.32 (0.13 to 0.79) | 0.01 |
| Unprotected receptive oral sex with CP | 45 (84.9) | 56 (62.2) | 4.86 (1.63 to 14.48) | 0.005 |
| Anal sex toy use with CP | 20 (37.7) | 16 (17.8) | 2.72 (1.01 to 7.32) | 0.05 |
If not mentioned, oral sex is receptive with or without insertive oral sex.
Insertive oral sex without a condom with casual partners (OR=0.79, 95% CI 0.11 to 5.51) and anal intercourse without a condom with casual partners (OR=0.89, 95% CI 0.31 to 2.54).
↵* ORs and 95% CIs from multivariate conditional logistic regression models.
CP, casual sex partners.