Table S1. Results of sensitivity analyses investigating predictors of ≥ 90% improvement in Psoriasis Area and Severity Index at 6 months. Table S2. Results of sensitivity analyses investigating predictors of ≥ 90% improvement in Psoriasis Area and Severity Index at 12 months. Table S3. The baseline characteristics of the biologic‐naive cohort. Table S4. Response rates for ≥ 90% and ≥ 75% improvement in Psoriasis Area and Severity Index (PASI) and absolute PASI ≤ 1·5 at 6 and 12 months. Table S5.