| Carestart™ | First Response® | Parascreen® | SD Bioline® | Field microscopy | Expert microscopy |
---|---|---|---|---|---|---|
Expert microscopy as reference test | ||||||
TP, FP | 20, 8 | 21, 9 | 21, 11 | 22, 8 | 21, 13 | N/A |
FN, TN | 27, 879 | 26, 878 | 26, 876 | 25, 879 | 26, 874 | |
Sensitivity (95 % CI) | 42.6 (31.5–50.9) | 44.7 (33.4–53.5) | 44.6 (30.4–59.7) | 46.8 (35.6–55.1) | 44.7 (32.9–54.9) | |
Specificity (95 % CI) | 99.1 (98.5–99.5) | 99.0 (98.4–99.5) | 98.7 (97.7–99.3) | 99.1 (98.5–99.5) | 98.5 (97.9–99.1) | |
PPV (95 % CI) | 71.4 (52.9–85.4) | 70.0 (52.3–83.8) | 65.6 (46.7–80.8) | 73.3 (55.8–86.3) | 61.8 (45.5–75.8) | |
NPV (95 % CI) | 97.0 (96.4–97.5) | 97.1 (96.5–97.6) | 97.1 (95.7–98.0) | 97.2 (96.7–86.3) | 97.1 (96.5–97.6) | |
LR positive (95 % CI) | 47.2 (21.2–110.3) | 44.0 (20.7–97.3) | 36.0 (18.4–70.3) | 51.9 (23.8–119.4) | 30.4 (15.7–59.3) | |
LR negative (95 % CI) | 0.58 (0.49–0.69) | 0.56 (0.47–0.67) | 0.56 (0.43–0.72) | 0.54 (0.45–0.65) | 0.56 (0.46–0.68) | |
DOR (95 % CI) | 81.4 (30.5–223.4) | 78.7 (30.6–207.9) | 64.3 (26.3–168.8) | 96.7 (36.4–264.7) | 54.3 (27.9–130.1) | |
PCR as the reference test | ||||||
TP, FP | 16, 12 | 20, 10 | 18, 14 | 17, 13 | 20, 14 | 30, 17 |
FN, TN | 46, 860 | 42, 862 | 44, 858 | 45, 859 | 42, 858 | 32, 855 |
Sensitivity (95 % CI) | 25.8 (15.8–38.7) | 32.3 (21.2–45.4) | 29.0 (18.5–42.1) | 27.4 (17.2–40.4) | 32.2 (17.2–40.4) | 48.4 (35.6–61.3) |
Specificity (95 % CI) | 98.6 (97.5–99.2) | 98.8 (97.8–99.4) | 98.3 (97.2–99.0) | 98.5 (97.3–99.1) | 98.3 (97.2–99.0) | 98.0 (96.8–98.8) |
PPV (95 % CI) | 57.1 (37.4–74.9) | 66.6 (47.1–82.0) | 56.2 (37.8-73.1) | 56.6 (37.6–74.0) | 58.8 (40.8–74.8) | 63.8 (48.4–76.9) |
NPV (95 % CI) | 94.9 (93.2–96.2) | 95.3 (93.7–96.5) | 95.1 (93.4–96.3) | 95.0 (93.3–96.3) | 95.3 (93.6–96.5) | 96.3 (94.8–97.4) |
LR positive (95 % CI) | 18.7 (9.2–37.8) | 28.2 (13.7–57.4) | 18.8 (9.4–34.6) | 18.3 (9.3–36.1) | 20.0 (10.6–37.8) | 24.8 (14.5–42.4) |
LR negative (95 % CI) | 0.75 (0.65–0.87) | 0.68 (0.57–0.81) | 0.72 (0.61–0.84) | 0.73 (0.63–0.85) | 0.68 (0.57–0.81) | 0.52 (0.41–0.69) |
DOR (95 % CI) | 24.9 (10.4–60.1) | 41.0 (16.9–101.2) | 25.0 (11.0–57.4) | 24.9 (10.7–58.6) | 29.1 (12.9–66.1) | 47.1 (22.4–100.2) |