Figure 3. Odds of high breast tissue density(75%) as a function of mean centred density score t₄ for pre-menopausal (dashed line) vs post-menopausal women (solid line). Note: Odds defined as probability of high density (p75%) divided by 1–(p75%); odds adjusted for mean age (50.9 years) and mean body mass index (BMI; 25.8).