Thank you for your concern. I am examining a group of patients against a group of normal people and measuring some parameters to compare them between the 2 groups.
I hope that I have clarified the study design, Looking forward to your kind response.
Is taking 20 control and 90 patients in a 2 groups study statistically correct in comparing various parameters? I mean that the patient group is higher in number than control group.
> Is that statistically correct?
When I perform a normality test for my variables using the grouping variable named "Group", I got a warning message telling me that there are values in the grouping variable named "Group" equal ".." ! knowing that I revised all the values in it and they were all with specific values .Also the...