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Table 1 Sample size estimation using the diagnostic test

From: Endometriosis fertility index score maybe more accurate for predicting the outcomes of in vitrofertilisation than r-AFS classification in women with endometriosis

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)