Table 1
Letter v usual care*
Outcome
Letter EER
Usual care CER
RBI (95% CI)
ABI |EER-CER|
NNT (CI)
Had mammogram
26.5%
16.0%
65.8% (41 to 95)
10.5%
10 (7 to 14)
Had Pap smear
19.4%
9.1%
113% (72 to 164)
10.3%
10 (8 to 13)