Table 3

Gonorrhoea (NG) positivity at the same anatomical sites in couples

 Couples where one man had throat NG Couples where both men had throat NG Total couples % of couples where both men had throat NG(95% CI) 37 13 50 26 (15 to 40) Throat NG positivity when couples were excluded if both men had urethral NG 37 11 48 23 (12 to 37) Couples where one man had anal NG Couples where both men had anal NG Total couples % of couples where both men had anal NG(95% CI) 18 15 33 45 (28 to 64) Anal NG positivity when couples were excluded if both men had urethral NG 18 13 31 42 (25 to 61) Anal NG positivity when couples were excluded if one or both men had throat NG 7 1 8 13 (0 to 53)
• NG, Neisseria gonorrhoeae.