Table 2

Performance of all diagnostic tests (95% CI) (n=502)

Diagnostic testSensitivity, %Specificity, %Positive predictive value, %Negative predictive value, %
Wet mount (n=502)69.6 (65.5 to 73.6)100 (100 to 100)100 (100 to 100)98.6 (97.5 to 99.6)
Culture (n=502)69.6 (65.5 to 73.6)100 (100 to 100)100 (100 to 100)98.6 (97.5 to 99.6)
Latex agglutination (n=502)54.6 (50.2 to 58.9)100 (100 to 100)100 (100 to 100)98.0 (96.7 to 99.2)
PCR (n=502)100 (100 to 100)99.8 (99.4 to 100)95.8 (94.1 to 97.6)100 (100 to 100)