Statistics Help @ Talk Stats Forum - Biostatistics
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Epidemiology and biostatistics, public health research. GLM, logistic regression, survival analysis, clinical trials.enSun, 21 Sep 2014 19:51:00 GMTvBulletin60http://www.talkstats.com/images/misc/rss.pngStatistics Help @ Talk Stats Forum - Biostatistics
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Longitudinal analysis
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Fri, 19 Sep 2014 17:52:49 GMTI am reading a book on medical analysis using SAS. These questions relate to longitudinal analysis. During a signficant section of the book they use...I am reading a book on medical analysis using SAS. These questions relate to longitudinal analysis. During a signficant section of the book they use Generalized Linear Models to measure impact on the DV by IV - for longitudinal data. I don't understand how you can use GLM (or regression generally other than specialized forms that adress autoregressive error such as ARDL models) for that. Can you?

An example is when you have a group score before and after some treatment. A related question is, is there a regression equivalent of repeated measure designs in ANOVA? Regression usually assumes independence, but since ANOVA uses specialized t test which do not assume indepence I assume regression can as well.

But I don't know any regression equivalent of repeated measure designs.
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Fri, 19 Sep 2014 00:54:01 GMTAverage height of tree is 23,2 m with standard deviation of 4,1 m. Draw and calculate above what height is the 10% of the highest trees? Heights are...Average height of tree is 23,2 m with standard deviation of 4,1 m. Draw and calculate above what height is the 10% of the highest trees? Heights are normally distributed.
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