Re: [R] General help on sample size based on recurrent events

2009-03-18 Thread Terry Therneau
--- begin included message - I would like to design a study (a two group comparison) based on reduction on events(say hospital admissions). In a previous study hospital admission rate of 140 admissions per 72 patients (over a 4 month period) has been observed. That is rate is about 1.9. In o

[R] General help on sample size based on recurrent events

2009-03-17 Thread si.fu
Hello, I have a general help question that some of you might be able able to help. I would like to design a study (a two group comparison) based on reduction on events(say hospital admissions). In a previous study hospital admission rate of 140 admissions per 72 patients (over a 4 month period)

[R] General help on sample size based on recurrent events

2009-03-17 Thread si.fu
Hello, I have a general help question that some of you might be able able to help. I would like calculate sample size for a study (a two group comparison) based on the outcome of reduction on (recurrent) events (say hospital admissions). In a previous study, hospital admission rate of 140 a