Abstract O019 Table 1

Sensitivity & specificity of separate and pooled samples

Sensitivity
(95% CI)
Specificity
(95% CI)
PPV (95% CI)NPV (95% CI)
NG separate samples98.6 (90.2–99.7)99.9 (99.5–100.0)98.6 (92.6–100.0)99.9 (99.5–100.0)
NG pooled97.2 (90.2–99.7)99.9 (99.5–100.0)98.6 (92.3–100.0)99.8 (99.4–100.0)
CT separate samples99.1 (96.8–99.4)99.7 (99.2–99.9)98.7 (96.1–99.7)99.8 (99.3–100.0)
CT pooled95.5 (91.9–97.8)99.5 (98.9–99.8)97.7 (94.7–99.3)99.0 (98.2–99.5)
  • There was no difference between self-taken samples analysed separately or pooled by McNemar test.