I have done a meta-analysis and have ORs and 95% CIs for three levels of an exposure (all published data). I know the SAS codes for doing a trend test with RAW data, but because these data are not raw data, but already adjusted and shown in previous publications, I don't know if or how to do a test of trend on those data. Perhaps some sort of meta-regress or something, but hopefully there is a more direct way. Thanks very much! paul
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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.