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Table 4 Evaluation of the performance of test methods used

From: Prevalence and the evaluation of culture, wet mount, and ELISA methods for the diagnosis of Trichomonas vaginalis infection among Ghanaian women using urine and vaginal specimens

Methods* ELISA HVS wet mount Urine culture
Sensitivity (95% CI) 88.9 (54.0–99.8) 33.3 (12.0–64.9) 11.1 (0.2–45.9)
Specificity (95% CI) 97.1 (93.1–98.9) 100 (97.3–100.0) 100 (97.2–100.0)
PPV 61.5 100.0 100.0
NPV 99.4 96.7 95.3
TP 8 3 1
TN 166 171 163
FP 5 0 0
FN 1 6 8
Accuracy (%) 96.7 96.7 95.4
AUC (%) 93.0 66.7 55.6
  1. PPV positive predictive value, NPV negative predictive value, TP true positives, TN true negatives, FP false positives, FN false negatives, AUC area under curve
  2. *Urine wet mount has been excluded due to lack of positivity