Table 2.
Sensitivity, NPV and TE of direct wet mount microscopy in detecting intestinal helminths among pregnant women attending ANC in East Wollega, Oromia, Ethiopia from November 2015 to January 2016
| Direct wet mount microscopy | FEC (N = 372) | Sensitivity 95% CI |
NPV 95% CI |
TE 95% CI |
|
|---|---|---|---|---|---|
| True Positive |
True Negative |
||||
| Total intestinal helminths | |||||
| Positive | 70 | NFP | 76% 0.69–0.82 |
92.7% 0.89–0.95 |
94% 0.91–0.96 |
| Negative | 22 | 280 | |||
| Hook worm | |||||
| Positive | 48 | NFP | 85.7% 0.83–0.88 |
97.5% 0.94–0.99 |
97.8% 0.95–0.99 |
| Negative | 8 | 316 | |||
| Ascaris lumbricoides | |||||
| Positive | 20 | NFP | 83.3% 0.80–0.86 |
98.8% 0.96–0.99 |
98.9% 0.97–0.99 |
| Negative | 4 | 348 | |||
| Hymenolepis nana | |||||
| Positive | 2 | NFP | 33.3% 0.29–0.38 |
98.9% 0.97–0.99 |
98.9% 0.97–0.99 |
| Negative | 4 | 366 | |||
| Taenia species | |||||
| Positive | NPF | NFP | NA | 98.6% 0.94–0.99 |
98.6% 0.94–1 |
| Negative | 5 | 367 | |||
| Strogyloides stercoralis | |||||
| Positive | NPF | NFP | NA | 99.7% 0.97–1 |
99.7% 0.97–1 |
| Negative | 1 | 371 | |||
NPF no parasite found, NA not available, NFP no false positive