| Carestart™ | First Response® | Parascreen® | SD Bioline® | Field microscopy | Expert microscopy |
---|---|---|---|---|---|---|
Expert microscopy as reference test | ||||||
TP, FP | 3, 10 | 2, 11 | 2, 9 | 2, 8 | 0, 8 | N/A |
FN, TN | 19, 911 | 11, 910 | 11, 912 | 11, 913 | 13, 913 | |
Sensitivity (95 % CI) | 13.6 (3.6–36.0) | 15.4 (2.7–46.3) | 15.4 (2.7–46.3) | 15.4 (2.7–46.3) | 0 | |
Specificity (95 % CI) | 98.9 (97.9–99.4) | 98.8 (97.8–99.4) | 99.0 (98.1–99.5) | 99.1 (98.2–99.6) | 99.1 (98.2–99.6) | |
PPV (95 % CI) | 23.1 (6.2–54.0) | 15.4 (2.7–46.3) | 18.2 (3.2–52.2) | 20.0 (3.5–55.8) | 0 | |
NPV (95 % CI) | 98.0 (96.8–98.7) | 98.8 (97.8–99.4) | 98.8 (97.8–99.4) | 98.8 (97.8–99.4) | 98.6 (97.5–99.2) | |
LR positive (95 % CI) | 12.6 (6.6–68.3) | 12.9 (3.2–52.4) | 15.7 (3.8–65.9) | 17.7 (4.2–75.5) | 0 | |
LR negative (95 % CI) | 0.87 (0.74–1.03) | 0.86 (0.68–1.08) | 0.85 (0.68–1.08) | 0.85 (0.67–1.07) | 1 (1.0–1.0) | |
DOR (95 % CI) | 14.4 (2.9–63.7) | 15.0 (2.0–86.3) | 18.4 (2.4–109.8) | 20.8 (2.7–126.8) | 0 | |
PCR as the reference test | ||||||
TP, FP | 3, 10 | 3, 10 | 3, 8 | 2, 8 | 4, 4 | 11, 2 |
FN, TN | 20, 901 | 20, 901 | 20, 903 | 21, 903 | 19, 907 | 12, 909 |
Sensitivity (95 % CI) | 13.0 (3.4–34.7) | 13.0 (3.4–34.7) | 13.0 (3.4–34.7) | 8.7 (1.5–29.5) | 17.4 (5.7–39.5) | 47.8 (27.4–68.9) |
Specificity (95 % CI) | 98.9 (97.9–99.4) | 98.9 (97.9–99.4) | 99.1 (98.2–99.6) | 99.1 (98.2–99.6) | 99.6 (98.8–99.9) | 99.8 (99.1–100.0) |
PPV (95 % CI) | 23.1 (6.2–54.0) | 23.1 (6.2–54.0) | 27.3 (7.3–60.7) | 20.0 (3.5–55.8) | 50.0 (1.7–82.6) | 84.6 (53.7–97.3) |
NPV (95 % CI) | 97.8 (96.6–98.6) | 97.8 (96.6–98.6) | 97.8 (96.6–98.6) | 97.7 (96.5–98.6) | 97.9 (96.8–98.7) | 98.7 (97.7–99.3) |
LR positive (95 % CI) | 11.9 (3.5–40.3) | 11.9 (3.5–40.3) | 14.9 (4.2–52.4) | 9.9 (2.2–44.1) | 39.6 (10.6–148.7) | 217.8 (51.2–927.5) |
LR negative (95 % CI) | 0.88 (0.75–1.03) | 0.88 (0.75–0.84) | 0.88 (0.75–1.03) | 0.92 (0.81–1.04) | 0.83 (0.69–1.00) | 0.52 (0.35–0.77) |
DOR (95 % CI) | 13.5 (2.7–59.5) | 13.5 (2.7–59.5) | 16.9 (3.2–78.2) | 10.8 (1.5–60.1) | 47.7 (9.1–251.4) | 416.6 (74.1–3087.2) |