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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

From: Diagnostic performance of direct wet mount microscopy in detecting intestinal helminths among pregnant women attending ante-natal care (ANC) in East Wollega, Oromia, Ethiopia

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

  1. NPF no parasite found, NA not available, NFP no false positive