Use PowerTOST [Power / Sample Size]
Dear Astea!
The sample sizes in the paper of the two Laszlos are based on 10 000 simulations (only).
Additionally the seed of the pseudo-random number generator for the sims was presumably different.
Try this:
With
One more reason to use PowerTOST's
. Also w.r.t the tables in the paper of the two Laszlos.
❝ ...
❝ By the way, for extreme numbers from the paper by Endrényi L, Tóthfalusi L. we also get slightly underpowered study:
❝ power.scABEL(CV=0.8,n=54,theta0=0.95,design="2x3x3")
❝ [1] 0.79917
❝ power.scABEL(CV=0.8,n=72,theta0=0.9,design="2x3x3")
❝ [1] 0.79782
❝ ...
The sample sizes in the paper of the two Laszlos are based on 10 000 simulations (only).
Additionally the seed of the pseudo-random number generator for the sims was presumably different.
Try this:
power.scABEL(CV=0.8, n=54, theta0=0.95, design="2x3x3", nsims=10000)
[1] 0.7976
power.scABEL(CV=0.8, n=54, theta0=0.95, design="2x3x3", nsims=10000, setseed=F)
[1] 0.7995
power.scABEL(CV=0.8, n=54, theta0=0.95, design="2x3x3", nsims=10000, setseed=F)
[1] 0.8029
With
nsims=1E6
and setseed=F
on the other hand I don't succeed to obtain power>0.8 (20 tries).One more reason to use PowerTOST's
power.scABEL() / sampleN.scABEL()
functions 
—
Regards,
Detlew
Regards,
Detlew
Complete thread:
- Sample Size Estimation -Replicate design- BE limits cakhatri 2017-11-30 09:44 [Power / Sample Size]
- Reference-scaling: Don’t use FARTSSIE! Helmut 2017-11-30 10:58
- Reference-scaling: Don’t use FARTSSIE? Astea 2017-11-30 22:50
- Reference-scaling: Don’t use FARTSSIE! Helmut 2017-12-01 11:42
- Reference-scaling: USE PowerTOST Astea 2017-12-01 14:16
- Reference-scaling: USE PowerTOST cakhatri 2017-12-04 06:00
- Reference-scaling: USE PowerTOST Helmut 2017-12-04 15:07
- Reference-scaling: USE PowerTOST cakhatri 2017-12-05 05:33
- Reference-scaling: USE PowerTOST Helmut 2017-12-04 15:07
- Use PowerTOSTd_labes 2017-12-06 09:52
- Use PowerTOST, not Endrényi L, Tóthfalusi L tables mittyri 2017-12-07 16:03
- Precision in Endrényi L, Tóthfalusi L tables d_labes 2017-12-07 18:21
- Precision of PowerTOST mittyri 2017-12-08 22:56
- Precision of PowerTOST Helmut 2017-12-09 17:00
- Precision of PowerTOST mittyri 2017-12-09 21:05
- Precision of PowerTOST Astea 2017-12-10 00:10
- Precision of PowerTOST Helmut 2017-12-10 20:27
- Precision of PowerTOST Astea 2017-12-10 21:13
- Precision of PowerTOST Helmut 2017-12-10 20:27
- Precision of PowerTOST Astea 2017-12-10 00:10
- Precision of PowerTOST mittyri 2017-12-09 21:05
- Precision of PowerTOST Helmut 2017-12-09 17:00
- Precision of PowerTOST mittyri 2017-12-08 22:56
- Precision in Endrényi L, Tóthfalusi L tables d_labes 2017-12-07 18:21
- Use PowerTOST, not Endrényi L, Tóthfalusi L tables mittyri 2017-12-07 16:03
- Reference-scaling: USE PowerTOST cakhatri 2017-12-04 06:00
- Reference-scaling: USE PowerTOST Astea 2017-12-01 14:16
- Reference-scaling: Don’t use FARTSSIE! Helmut 2017-12-01 11:42
- Reference-scaling: Don’t use FARTSSIE! pjs 2018-02-09 13:08
- Reference-scaling: Don’t use FARTSSIE! Helmut 2018-02-09 20:15
- Reference-scaling: Don’t use FARTSSIE? Astea 2017-11-30 22:50
- Reference-scaling: Don’t use FARTSSIE! Helmut 2017-11-30 10:58