Table 1 Prevalence of infection and sensitivity, specificity, positive predictive value (PPV) and negative predictive value (NPV) as well as Cohen’s Kappa index (Kappa) based on data obtained using buffy coat method (BCM) and microscopic examination (ME) of blood films
From: The buffy coat method: a tool for detection of blood parasites without staining procedures
Parasite | Overall prevalencea | BCMa | MEa | Sensitivityb | Specificityb | PPVb | NPVb | Kappac |
|---|---|---|---|---|---|---|---|---|
Haemoproteus | 135 (39.1) | 125 (92.6) | 113 (83.7) | 91.2 (85.9–96.4) | 90.5 (86.8–94.3) | 82.4 (75.7–89.1) | 95.5 (92.7–98.2) | 0.80 (0.73–0.86) |
Trypanosoma | 91 (26.4) | 91 (100) | 0 (0) | –d | 73.6 (69.0–78.3) | –d | 100 (100) | –d |
Plasmodium | 18 (5.2) | 0 (0) | 18 (100) | –d | 100 (100) | – d | 94.8 (92.4–97.1) | – d |
Lankesterella | 13 (3.8) | 10 (76.9) | 7 (53.9) | 57.1 (20.5–93.8) | 98.0 (97.0–100) | 40.0 (9.6–70.4) | 99.1 (98.1–100) | 0.46 (0.16–0.76) |
Leucocytozoon | 6 (1.7) | 2 (33.3) | 5 (83.3) | 20.0 (0–55.1) | 99.7 (99.1–100) | 50.0 (0–100) | 98.8 (97.7–100) | 0.28 (0–0.72) |
Microfilaria | 6 (1.7) | 6 (100) | 1 (16.7) | 100 (100) | 98.6 (97.3–99.8) | 16.7 (0–46.5) | 100 (100) | 0.28 (0–0.72) |