Sample Size Calculation [Software]
Dear All,
Thanks for your previous prompt answer for CV calculation!
I used the following SAS Procedure for Sample Size Calculation and I hope that it would have been a right procdure for calculating power and sample size for BA/BE studies.
How to calculate manually while I am using log transformed data?
Please help me in this regard for manual calculation especially "meanratio" and "Lower and Upper bound" and "CV" or give me a practical example with formula or any material.
Thanks in advance,
S.Sasikumar
Edit: Reformatted using BBCode 'code' [Helmut]
Thanks for your previous prompt answer for CV calculation!
I used the following SAS Procedure for Sample Size Calculation and I hope that it would have been a right procdure for calculating power and sample size for BA/BE studies.
How to calculate manually while I am using log transformed data?
Please help me in this regard for manual calculation especially "meanratio" and "Lower and Upper bound" and "CV" or give me a practical example with formula or any material.
proc power;
Twosamplemeans
test = Equiv_ratio
dist = lognormal
meanratio = .1
CV = 1.05
lower = .80 /*I have doubt that how to fix lower and upper bound, I have doubt that 20% of reference mean of ln transformed or unlogtransformed*/
upper = 1.20
alpha = 0.01
power = .8 .9
total = .;
run;
Thanks in advance,
S.Sasikumar
Edit: Reformatted using BBCode 'code' [Helmut]
Complete thread:
- Sample Size Calculationsasikumar 2008-04-03 09:19 [Software]
- Sample Size Calculation (SAS) Jaime_R 2008-04-03 13:13
- Sample Size Calculation d_labes 2008-04-23 11:54
- Sample Size Calculation balakotu 2009-09-07 07:51
- Sample Size Calculation yuvrajkatkar 2009-09-19 09:24
- Paper, pencil, brain ;-) Helmut 2009-09-19 11:48
- Paper, pencil, brain ;-) yuvrajkatkar 2009-09-21 15:10
- Paper, pencil, brain ;-) Helmut 2009-09-21 15:23
- Paper, pencil, brain ;-) Helmut 2009-09-21 18:33
- Paper, pencil, brain ;-) yuvrajkatkar 2009-09-22 16:09
- No paper, pencil, brain :-( Helmut 2009-09-22 18:22
- about your lectures yuvrajkatkar 2009-09-23 07:27
- About Trust Helmut 2009-09-23 13:50
- sample size calculation yuvrajkatkar 2009-10-01 13:33
- inter- / intra- / total variance Helmut 2009-10-01 13:52
- inter- / intra- / total variance yuvrajkatkar 2009-10-01 17:13
- Theta?! Helmut 2009-10-01 17:30
- sample size for parallel design yuvrajkatkar 2009-10-03 07:44
- Reference? Helmut 2009-10-03 13:46
- MSE obtain from Parallel study in WinNonlin yuvrajkatkar 2009-10-09 16:46
- Parallel study in WinNonlin Helmut 2009-10-10 10:51
- MSE obtain from Parallel study in WinNonlin yuvrajkatkar 2009-10-09 16:46
- Reference? Helmut 2009-10-03 13:46
- sample size for parallel design yuvrajkatkar 2009-10-03 07:44
- Theta?! Helmut 2009-10-01 17:30
- inter- / intra- / total variance yuvrajkatkar 2009-10-01 17:13
- inter- / intra- / total variance Helmut 2009-10-01 13:52
- sample size calculation yuvrajkatkar 2009-10-01 13:33
- About Trust Helmut 2009-09-23 13:50
- about your lectures yuvrajkatkar 2009-09-23 07:27
- No paper, pencil, brain :-( Helmut 2009-09-22 18:22
- Paper, pencil, brain ;-) yuvrajkatkar 2009-09-22 16:09
- Paper, pencil, brain ;-) yuvrajkatkar 2009-09-21 15:10
- Paper, pencil, brain ;-) Helmut 2009-09-19 11:48