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    SAS glimmix overdispersion

    Let's say I have an experiment with a total of 10 petridishes each with 20 seeds. 5 of these petri dishes are variety A and 5 are variety B. I count the number of germinated seeds in each dish. There seems to be to be two main ways to model potential over dispersion: proc glimmix data=a...
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    Paired samples with competition

    Hi all, I have abit of a puzzle that at first may seem straightforward but I believe there is a complication. I have a paired design with each subject being a pot containing 2 plants, 1 treated and 1 untreated. Note that the treatments are applied before planting so they so not run onto...
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    Variable labels in Proc Mixed

    I am analysing multiple variables var1 - var10 which have labels. They are named as such so that running a do loop is easy in a Macro. When running Proc GLM it displays both the variable name and the label in the output by default. When running proc mixed only the variable name is displayed. How...
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    Binomial regression with x as the dependent variable and n as an independent variable

    Hi all I have a sample size of 100. Out of 100 a certain number are successful at stage one. Of those successful at stage one some are successful at stage two. I want to regress the number successful at stage one and a number of other factors against the number successful at stage two. The...