Fig. 1From: The effect of volumetric breast density on the risk of screen-detected and interval breast cancers: a cohort studyAssociations between mammographic measures and breast cancer risk. In the cox proportional hazards analyses age was used as the underlying time scale. Pt p-trend: this was determined by adding the categorical measures as a continuous measure to the model, PDV percentage dense volume, DV dense volume, Per SD per standard deviation, VDG Volpara density grade, Q quartile, C category. *Absolute dense volume (DV) measures were adjusted for nondense (breast fat) volumeBack to article page