TABLE 2.
Sensitivities of the three diagnostic methodsa
| Method | % of positive samples (no./total) | % sensitivity in comparison to Baermann (day 1 and 2) positive result (95% CI) (n = 69) | % sensitivity in comparison to any positive test (95% CI) (n = 80) |
|---|---|---|---|
| Baermann, days 1 and 2 | 72.6 (69/95) | 86.3 (76.7–92.9)*° | |
| Baermann, day 1 | 50.5 (48/95) | 69.6 (57.3–80.0) | 60.0 (48.4–70.8)* |
| Baermann, day 2 | 53.7 (51/95) | 74.0 (62.0–84.0) | 63.8 (52.2–74.2)* |
| QIA | 26.3 (25/95) | 27.5 (17.5–39.6) | 31.3 (21.3–42.6)* |
| POL | 65.3 (62/95) | 77.0 (65.1–86.1) | 77.5 (77.0–86.0)*° |
a
Sensitivity was estimated on the basis of Baermann (collected on 2 days) method positivity and positivity detected by both the Baermann method (days 1 and 2) and PCR. *, statistically significant difference between the Baermann method (days 1 and 2 together and days 1 and 2 separately and QIA and between POL and the Baermann method (days 1 and 2) and the QIA method (P < 0.05); °, no statistically significant difference between the Baermann method (days 1 and 2) and the POL method (P > 0.05).