repeated measure ANOVA - missing data & multiple-groups
I have the following dataset:
12 patients x 4 sessions each
12 controls x 2 sessions each
However, it happens that some patients have incomplete data. For example, some might have just 2 sessions or 1 session out of 4. I am having trouble finding the best statistical test for this particular case. Can someone suggest the most appropriate statistical test to apply in order to find differences between groups and sessions, considering that I have missing data? I thought repeated measures ANOVA would be suitable, however, I am concerned with the missing data.
Thanks! I will appreciate any input or suggestion!