Calcipotriene 0.005%–Betamethasone Dipropionate 0.064% Ointment Versus Topical Suspension in the Treatment of Plaque Psoriasis: A Randomized Pilot Study of Patient Preference

Statistical Analysis

Participant characteristics were reported with percentages for dichotomous data and median and ranges for other data. Subjective participant preference survey scores were calculated by taking the mean (standard deviation [SD]) sum of the scores for each individual survey item for both products. A generalized linear model that accounted for possible carryover and period effects was used to compare the difference of individual participant scores for the 2 products using SAS software. The mean (SD) amount of product used was reported and correlated to the preference score using a Spearman rank correlation. Total and individual survey scores were compared between sexes using Wilcoxon rank sum tests.

Results

Participants were enrolled in and completed the study from January 2013 to March 2013. The Figure presents a diagram of the Consolidated Standards of Reporting Trials. Thirty patients were screened; 10 patients did not meet eligibility criteria. Twenty patients were enrolled in the study with 10 patients randomized to each study arm. All 20 participants completed the study.

^{Consolidated Standards of Reporting Trials diagram of plaque psoriasis treatment with calcipotriene 0.005%–betamethasone dipropionate 0.064% ointment versus topical suspension.}

Participant demographics are described in Table 1. The median age was 48 years (range 29–64 years). The majority of participants were male (13/20) and white (18/20). The median IGA score was 3 (range, 2–3).