> only improved the situation from 56% to 50% But isn't that millions of fewer false positive results over 10 years? Assumptions: * US Women: ~150e6 * Fract

> only improved the situation from 56% to 50% But isn't that millions of fewer false positive results over 10 years? Assumptions: * US Women: ~150e6 * Fraction getting annual mamograms: ~1/3 (life expectancy of 80yrs, and mamograms during 30 of those years, minus some with poor access to health care) * Reduction in cumulative FP rate over 10 year period: 6% 150e6 x 0.33 * 0.06 = ~3e6 fewer false positive results over a 10 year period. That seems like a significant effect size to me.