Breast measurements by case-control status.

aP is a p-value from a two-sided two-sample t-test, based on transformed variables. Area breast measurements were square root transformed and volume breast measurements were cubic root transformed for the analysis. Mean and standard deviation were calculated using untransformed data.b14 subjects with compression force under minimum detectable threshold was imputed as half of the minimum detectable value. Mean and standard deviation were calculated based on imputed variable.cP-value from Wilcoxon rank-sum test.