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Weighted Kaplan–Meier and Cox proportional hazards models for corticosteroid-free drug survival comparing WCS and OCS among the overall population (a) and the subgroup of patients with secondary loss of response (b) HRs, 95% CIs, and p values demonstrate statistical differences between cohorts.
CI, confidence interval; HR, hazard ratio; OCS, outside-class switchers; WCS, within-class switchers.
