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Microscopic detection of E. histolytica trophozoites among PCR E. Histolytica positive and negative samples.
| PCR* E. histolytica |
Microscopy positive (n, %) | Microscopy negative (n, %) | Total (n, %) |
|---|---|---|---|
| Positive | 9 (90) | 1 (10) | 10 (100) |
| Negative | 12 (60) | 8 (40) | 20 (100) |
| Total | 21 (70) | 9 (30) | 30 (100) |
Sensitivity 42.9%, specifity 90.0%, PPV 90.0%, NPV 45% p value 0.003 (McNemar test).
