Table 2 “Breast cancer patient” is evaluated by 2-sample test for equality of proportions, but ‘No Breast cancer and no Ovarian cancer’ is evaluated by Fisher 's exact test

From: The impact of public insurance on RRSO for HBOC in Japan: a nationwide data study

 

short-Pre

Post

P

N

RRSO

N

RRSO

Breast cancer patient (no ovarian cancer)

Total

383

42 (11.0%)

623

142 (22.8%)

<0.01

BRCA1 (35)

170

23 (13.5%)

243

65 (26.8%)

<0.01

BRCA2 (40)

213

19 (8.9%)

380

77 (20.3%)

<0.01

No breast cancer and no ovarian cancer

Total

63

9(14.29%)

87

3 (3.45%)

0.03

BRCA1 (35)

38

8(21.1%)

48

3 (6.25%)

0.05

BRCA2 (40)

25

1(4%)

39

0 (0%)

0.39

  1. 2-sample test for equality of proportions
  2. Fisher’s exact test