Bioequivalence and Bioavailability Forum

dear shri !

first I would suggest a descriptive summary table showing percentage of scores by treatment

rows: treatment (a,b,c,d)
columns: scores (0,1,2,3)
cells: row percentages (total per treatment = 100%)

in the case that you are interested in a score of 3 between treatments I suggest to define a new variable with values of 0 (score<>3) and 1 (score=3). you may then calculate the treatment effect (odds ratio + corresponding confidence interval) between two treatments regarding the risk of experiencing a score of 3 (via logistic regression to model the whole data set like: new variable = treatment).

hope this helps

martin