Table 3 Concordance of rectal chlamydia and urethral chlamydia between men in all 473 partnerships in which both men were screened for urethral and rectal chlamydia on the same day
Urethra negative | Urethra positive | Total | Urethral chlamydia positivity % (95% CI) | |
|---|---|---|---|---|
Rectum negative | 884 | 16 | 900 | 1.8 (1.0 to 2.9) |
Rectum positive | 32 | 14 | 46 | 30.4 (17.7 to 45.8) |
Total | 916 | 30 | 946 | 3.2 (2.1 to 4.5) |
Rectal chlamydia positivity % (95% CI) | 3.5 (2.4 to 4.9) | 46.7 (28.3 to 65.7) | 4.9 (3.6 to 6.4) |