Table 4.
Comparison of the diagnostic capability of microscopy (LM) and nested polymerase chain reaction (nPCR) versus histopathology (HP) in Plasmodium infection in placental tissue
| HP | Percentages*/values† | |||||||
|---|---|---|---|---|---|---|---|---|
| Positive | Negative | Total | ||||||
| A. LM vs. histopathology | S | E | PPV | NPV | ||||
| LM | Positive | 5 | 3 | 8 | 33 | 95 | 62 | 86 |
| Negative | 10 | 61 | 71 | PLR | NLR | K | ||
| Total | 15 | 64 | 79 | 6.6 | 1.4 | 0.3488 | ||
| B. nPCR vs. histopathology | S | E | PPV | NPV | ||||
| nPCR | Positive | 7 | 15 | 22 | 47 | 77 | 32 | 86 |
| Negative | 8 | 49 | 57 | PLR | NLR | K | ||
| Total | 15 | 64 | 79 | 1.4 | 1.5 | 0.1971 | ||
*
S = sensitivity; E = specificity; PPV = positive predictive value; NPV = negative predictive value; PLR = positive likelihood ratio; NLR = negative likelihood ratio; K = Kappa coefficient.
†
For PLR and NLR.