PRISM participant recruitment and randomization
aRandom allocation to study arms occurred prior to participant contact and recruitment. Larger numbers for the ATR and ELR groups were planned for future analysis of supplemental intervention.
bParticipants excluded from main analysis are: (1) those with self-reported race other than white or black (EUCR=7, ATR=24, ELR=22); (2) those who received subsequent mammograms ≤10 months after enrollment mammograms (EUCR=3, ATR=9, ELR=9), and/or those who received previous mammograms ≤10 months prior to enrollment mammograms (EUCR=38, ATR=63, ELR=45).