A couple of weeks back, we talked about 5300 patient-years powered at .80 which netted 4240. So your 1100 patient-years drop out is close. But even with 1100 dropouts, there would still be a significant number of patients years that could be added back into the 4240 up to the date of when they dropped out. So we could end up north of 30% RRR.
IMO....Koo