Difference between independent is to be estimated using independent student s t- test for parametric continuous variables, Manny whitney test U- test for non parametric continuous variables and Chi- square and test for categorical variables
propecia hair loss 8, 11 Patients had to indicate how much they were bothered by each of the 18 symptoms during the past 4 weeks on a 5 point severity scale 0 not at all; 1 slightly; 2 moderately; 3 quite a bit; 4 extremely