quite significantP <10 -6
For BRCA2 both ER and grade were highly significant predictors of mutation status, and the interaction of ER and grade was also quite significant (χ 2 = 28.3, 2 df , P <10 -6 ).
For BRCA2 both ER and grade were highly significant predictors of mutation status, and the interaction of ER and grade was also quite significant (χ 2 = 28.3, 2 df , P <10 -6 ).