Rate of rectal chlamydia according to history and rectal symptoms
| Variable | Total (n=99) | Number with rectal CT (%) (n=38) | Adjusted RR | 95% CI | Wald statistics, p Value | |
| History of unprotected receptive anal intercourse (UPRAI) | Y | 51 | 31 (60.8) | 1 | 0.002 | |
| N | 48 | 7 (14.6) | 0.25 | (0.07 to 0.82) | ||
| Rectal symptoms | Y | 10 | 9 (90) | 9.54 | (1.09 to 83.4) | 0.041 |
| N | 89 | 29 (32.6) | 1 |