Table 1.
Sample size estimation using the diagnostic test
| EFI score |
Pregnancy |
Total | |
|---|---|---|---|
| Positive | Negative | ||
|
≥6 score |
a(44) |
b(47) |
a + b(91) |
|
≤5 score |
c(23) |
d(47) |
c + d(70) |
| Total | a + c(67) | b + d(94) | N(161) |
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