search for: frison

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2006 Sep 13
1
Power analysis for repeated measures ANCOVA
Dear All, I wonder if anyone has written a code for power analysis with repeated measures ANCOVA? I am aware of the following reference: Frison L and Pocock SJ: Repeated Measures in Clinical Trials: analysis using mean summary statistics and its implications for design in Statistics in Medicine, 1992, 11:1685-1704. Statistics in Medicine It will probably be fairly easy to code this up or even work on this from scratch, but it would be...
2012 Jan 05
1
Fwd: WHO Anthro growth curve macros and R&In-Reply-To=<CAAOCNNZawGtKkWpgFMYADSyxWGTeWEDxqVVHv7=Azo=1G+H9gg@mail.gmail.com>
Dear Gustaf, I wish you a happy new year! I am a PhD Staff at LSHTM and I have been trying to use WHO anthro macros in R with the file you posted on internet but when I double check the WHZ, HAZ, WAZ output with output from ENA or STATA, it differs slightly. Do you have any idea why that might be the case? Many thanks Severine