Table 3.

Sensitivity and specificity for the detection ofN. gonorrhoeae by COBAS AMPLICOR calculated on a patient basis

Group (no. of specimens)Specimen%
PrevalenceSensitivitySpecificity
All women (2,192)Endocervical6.692.499.5
Urine64.899.8
Asymptomatic men (714)Urethral3.673.199.0
Urine42.399.9
Symptomatic men (1,267)Urethral29.498.198.8
Urine94.199.9