TABLE 2

Xpert TV versus PIS results by symptomatic status for femalesa

Sample typeStatusNo. testedSensitivity95% CISpecificity95% CI% prevalencePPV (%)NPV (%)
ESSymp685100 (71/71)94.9–10098.5 (605/614)97.2–99.310.488.8100
Asymp1,11498.1 (104/106)93.4–99.899.1 (999/1,008)98.3–99.69.592.099.8
Overall1,79998.9 (175/177)96.0–99.998.9 (1,604/1,622)98.3–99.39.890.799.9
P values0.517−0.70, 4.480.331−1.69, 0.54
PC-VSSymp68298.6 (73/74)92.7–10099.5 (605/608)98.6–99.910.996.199.8
Asymp1,10995.0 (113/119)89.3–98.199.6 (986/990)99.0–99.910.796.699.4
Overall1,79196.4 (186/193)92.7–98.599.6 (1,591/1,598)99.1–99.810.896.499.6
P values0.254−1.04, 8.421.000−0.77, 0.59
URSymp68898.6 (71/72)92.5–10099.8 (615/616)99.1–10010.598.699.8
Asymp1,10598.2 (109/111)93.6–99.899.6 (990/994)99.0–99.910.096.599.8
Overall1,79398.4 (180/183)95.3–99.799.7 (1,605/1,610)99.3–99.910.297.399.8
P values1.000−3.25, 4.080.655−0.27, 0.75
  • a Values in parentheses are the number of true positives over the total of true positives plus false negatives (sensitivity) and the number of true negatives over the total of true negatives plus false positives (specificity). PIS, patient infected status; PPV, positive predictive value; NPV, negative predictive value; ES, endocervical swab; PC-VS, patient-collected vaginal swab; UR, urine; Symp, symptomatic; Asymp, asymptomatic.