how can i compare the effects of an prior intervention between two groups? can you compare rbc before vs after treatment how can i compare an interventional study between two groups comparing the effect of pre-post intervention between two groups with multiple numeric dependent variables how can a pre post procedure test compare how can you compare the effects of an intervention between two groups with multiple numeric dependent variables? how to measure the effect of a treatment on a patient before a treatment how can i compare the effect of a pre-post intervention with multiple numeric dependent variables? how can we compare the effect of an intervention between two groups with multiple dependent variables? how to compare pre-post intervention how to compare effects of prepost intervention how many patients does a rbc test test for how to compare the effect of pre and post intervention how to test effect of intervention how can I compare the effect of an pre-post intervention in both groups with multiple numeric dependent variables can i measure the effect of pre or post intervention how to compare the effects of pre post intervention how to compare a pre-post intervention and a post-intervention intervention is pre-post an independent variable what test is done for rbc