Research Article
Performance of Laboratory Professionals Working on Malaria Microscopy in Tigray, North Ethiopia
Table 3
Performance of laboratory personnel to correctly identify and quantify malaria slides, Tigray, North Ethiopia, 2016.
| Participant reader | Expert reader | Sensitivity | Specificity | PPV | NPV | Agreement | Kappa | Pos | Neg |
| Species identification | | | | | | | | | | P. falciparum ( = 92) | Pos | 52 | 2 | 56.5% | 95.7% | 98.7% | 26.8% | 76% | 0.61 | Neg | 40 | 44 | Total | 92 | 46 |
| P. vivax ( = 92) | Pos | 58 | 2 | 63.0% | 95.7% | 98.9% | 30. 1% | 79% | 0.62 | Neg | 34 | 44 | Total | 92 | 46 |
| Mixed infection ( = 46) | Pos | 10 | 2 | 21.7% | 95.7% | 96.8% | 16.9% | 59% | 0.52 | Neg | 36 | 44 | Total | 46 | 46 |
| Parasitemia grading | | | | | | | | | | Pf ++++ (high density) ( = 46) | Pos | 4 | 2 | _ | _ | _ | _ | 52% | 0.49 | Neg | 42 | 44 | Total | 46 | 46 |
| Pf + (low density) ( = 46) | Pos | 2 | 2 | _ | _ | _ | _ | 50% | 0.48 | Neg | 44 | 44 | Total | 46 | 46 |
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