|
No. of smears
|
No. of positive cases
|
No. of negative cases
|
Prevalence (95% CI) (%)
|
False negative rate (%)
|
GMEPG of the positive cases (1)a
|
Overestimation of GMEPG (%)b
|
GMEPG of the positive cases (2)c
|
GMEPG of the false negative casesc
|
|---|
|
1 stool × 1 smear
|
16
|
381
|
4.0 (2.1–6.0)
|
20.0
|
58.0
|
94.7
|
35.0
|
15.7d
|
|
1 stool × 2 smears
|
17
|
380
|
4.3 (2.3–6.3)
|
15.0
|
44.7
|
49.9
|
32.0
|
19.7e
|
|
1 stool × 3 smears
|
18
|
379
|
4.5 (2.5–6.6)
|
10.0
|
36.7
|
23.3
|
30.8
|
21.9f
|
|
2 stools × 1 smear
|
18
|
379
|
4.5 (2.5–6.6)
|
10.0
|
37.4
|
25.5
|
33.2
|
11.3g
|
|
2 stools × 2 smears
|
20
|
377
|
5.0 (2.9–7.2)
|
0.0
|
32.0
|
7.4
|
29.8
|
–
|
|
2 stools × 3 smears
|
20
|
377
|
5.0 (2.9–7.2)
|
0.0
|
29.8
|
0.0
|
29.8
|
–
|
- aOnly the available smears were calculated
- bThe calculation was based on the GMEPG of the positive cases (1)
- cAll six smears in ‘gold’ standard were calculated
- dt(18) = 1.14, P = 0.270, compared to the GMEPG of the positive cases (2)
- et(18) = 0.60, P = 0.554, compared to the GMEPG of the positive cases (2)
- ft(18) = 0.35, P = 0.727, compared to the GMEPG of the positive cases (2)
- gt(18) = 1.15, P = 0.264, compared to the GMEPG of the positive cases (2)
