No. of smears

Positive cases

Negative cases

False negative cases


N

Consuming raw fish

Not consuming raw fish

Unclear data

N

Consuming raw fish

Not consuming raw fish

Unclear data

N

Consuming raw fish

Not consuming raw fish

Unclear data


n (%)^{a}

n

n

n (%)^{a}

n

n

n (%)^{a}

n

n


1 stool × 1 smear

45

32 (72.7)^{b}

12

1

352

101 (28.9)^{c}

249

2

32

21 (67.7)^{d}

10

1

1 stool × 2 smears

49

35 (72.9)^{e}

13

1

348

98 (28.3)^{f}

248

2

28

18 (66.7)^{g}

9

1

1 stool × 3 smears

55

39 (73.6)^{h}

14

2

342

94 (27.6)^{i}

247

1

22

14 (63.6)^{j}

8

0

2 stools × 1 smear

64

43 (68.3)^{k}

20

1

333

90 (27.2)^{l}

241

2

13

10 (83.3)^{m}

2

1

2 stools × 2 smears

73

50 (69.4)^{n}

22

1

324

83 (25.8)^{o}

239

2

4

3 (100.0)^{p}

0

1

2 stools × 3 smears

77

53 (70.7)^{q}

22

2

320

80 (25.1)

239

1

0

0

0

0

 ^{a}No. with unclear data was not included in the calculation of the proportion
 ^{b}χ^{2} = 33.64, df = 1, P < 0.001, positive cases vs negative cases
 ^{c}χ^{2} = 19.78, df = 1, P < 0.001, negative cases vs false negative cases
 ^{d}χ^{2} = 0.22, df = 1, P = 0.641, positive cases vs false negative cases
 ^{e}χ^{2} = 37.49, df = 1, P < 0.001, positive cases vs negative cases
 ^{f}χ^{2} = 17.18, df = 1, P < 0.001, negative cases vs false negative cases
 ^{g}χ^{2} = 0.33, df = 1, P = 0.568, positive cases vs false negative cases
 ^{h}χ^{2} = 43.44, df = 1, P < 0.001, positive cases vs negative cases
 ^{i}χ^{2} = 12.87, df = 1, P < 0.001, negative cases vs false negative cases
 ^{j}χ^{2} = 0.74, df = 1, P = 0.389, positive cases vs false negative cases
 ^{k}χ^{2} = 39.91, df = 1, P < 0.001, positive cases vs negative cases
 ^{l}Fisher’s exact test, P < 0.001, negative cases vs false negative cases
 ^{m}Fisher’s exact test, P = 0.491, positive cases vs false negative cases
 ^{n}χ^{2} = 50.18, df = 1, P < 0.001, positive cases vs negative cases
 ^{o}Fisher’s exact test, P = 0.018, negative cases vs false negative cases
 ^{p}Fisher’s exact test, P = 0.551, positive cases vs false negative cases
 ^{q}χ^{2} = 56.44, df = 1, P < 0.001, positive cases vs negative cases
 Abbreviation: N, total number of cases