Table 1.

Duration of exposure to study treatment and duration of follow-up in the core study

DurationExposure to study treatment
Follow-up
Letrozole, n = 2,563Placebo, n = 2,573Letrozole, n = 2,582Placebo, n = 2,586
Median24242827
Estimated percentage of patients atOn the study treatment (%)Followed up (%)
1 y82829595
2 y50506261
3 y24233130
4 y881010
5 y0.20.20.20.3