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PASI-improvement rates of the placebo and USTK groups compared between weeks 0, 12, and 24 (A). The PASI-75 rate (PASI-75%) was compared between the placebo and USTK groups at week 12 and week 24 (B). ● Denotes placebo group; ■ denotes USTK group; * p<0.05. PSAI – psoriasis area-severity index; USTK – ustekinumab.
