Figure 3.

Scatter plots showing overall breast cancer mortality reduction vs screening sensitivity in women aged 40–49 years. A) Annual screening in women aged 40–49 years, and B) biennial screening in women aged 40–49 years. Women aged 50–69 years underwent annual screening (A and B). For a median mammography threshold (MT) of 0.8 cm, the mean doubling time (DT) is shown in days (30–365); the sequential ordering of mean DT is the same for all values of the median MT. The linearity between overall breast cancer mortality reduction and sensitivity is tested across all paired values of median MT and mean DT, producing an overall r² = .94, r = Pearson product moment correlation coefficient.