Table 3.
The performance of formol-ethyl acetate test, spontaneous tube sedimentation test in E. histolytica/dispar and G. lamblia detection compared to the composite reference, 2019.
| Methods |
Composite reference to amoebiasis or giardiasis |
||||||
|---|---|---|---|---|---|---|---|
| Pos (N) |
Neg (N) |
SN (95%CI) | SP (95%CI) | PPV (95%CI) | NPV (95%CI) | K value | |
| FECT | 159 | 7 | 65.4 (59.1–71.4) | 98.8 (97.6–99.5) | 99.91 (99.80–99.96) | 13.1 (11.2–15.2) | 0.710 |
| 84 | 596 | ||||||
| STST | 191 | 7 | 78.6 (72.9–83.6) | 98.8 (97.6–99.5) | 99.92 (99.84–99.96) | 19.6 (16.0–23.6) | 0.820 |
| 52 | 594 | ||||||
| Composite reference to amoebiasis | |||||||
| FECT | 140 | 1 | 69.7 (62.8–75.9) | 99.8 (99.1–100.0) | 99.99 (99.92–100.0) | 14.8 (12.3–17.6) | 0.774 |
| 61 | 642 | ||||||
| STST | 161 | 4 | 80.1 (73.9–95.4) | 99.4 (98.4–99.8) | 99.96 (99.89–99.98 | 20.8 (16.6–25.8) | 0.847 |
| 40 | 639 | ||||||
| Composite reference to giardiasis | |||||||
| FECT | 32 | 2 | 51.6 (38.6–64.5) | 99.7 (99.1–100.0) | 99.87 (99.89–99.99) | 9.8 (7.7–12.3) | 0.648 |
| 30 | 780 | ||||||
| STST | 46 | 1 | 74.2 (61.5–84.4) | 99.9 (99.3–100.0) | 99.99 (99.94–100.0) | 16.9 (11.8–23.7) | 0.834 |
| 16 | 781 | ||||||
Pos (N) = positive (number), Neg (N) = negative (number), SN = sensitivity, CI = confidence interval, SP = specificity, PPV = positive predictive value, NPV = negative predictive value.