I have some clustered eye data and I am looking at time-to outcome which may be different per eye. Would I need to use a weighted log-rank test for this clustered data? Could anyone share a reference?
Perhaps this example is relevant to your situation:
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ANOVA, or Analysis Of Variance, is used to compare the averages or means of two or more populations to better understand how they differ. Watch this tutorial for more.
Find more tutorials on the SAS Users YouTube channel.