Table 2 As Table 1, but also including all constructed pairs from triplets and quadruplets
From: No Sib Pair Concordance for Breast or Ovarian Cancer in BRCA1 Mutation Carriers
Cancer | Number of patients | Frequency | Expected concordant pairs | Observed concordant pairs | Chi square (p) |
|---|---|---|---|---|---|
breast | 209 | 209/360 = 0.58 | 180×(0.58)2 = 60.7 | 63 | 0.09 (> 0.05) |
ovarian | 151 | 151/360 = 0.42 | 180×(0.42)2 = 31.7 | 34 | 0.17 (> 0.05) |