Figure 2

Linkage re-analysis with an alternate covariate model for PMD or various subgroups of families. Linkage results are shown for (A) all families with an alternate covariate (new covar.) model for PMD (yellow trace) and (A, B and C) for families containing at least two sisters diagnosed before age 50 (black traces), families where sisters have very similar predictions (preds) of MD (grey traces), or families where sisters have very different predictions of MD (turquoise traces) for phenotypes indicated. MD, mammographic density; PMD, percent mammographic density.