PCS changes from baseline in the prednisone and placebo arms.
*Paired t-testSubgroup analysis was employed to evaluate the possibility of a correlation between the PCS levels at baseline and the primary outcome results. Each arm of the study was divided into two subgroups based on the baseline scores. Study subjects were identified as either low PCS (baseline PCS <40) or high PCS (baseline PCS >40). The dividing line of 40 points was chosen a priori for an equitable distribution of subjects. Results of the subgroup analysis are presented in 