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Event-Free Survival by Arm. Event-free survival among eligible, treated patients (A) randomized to vitamin D (n = 135) or placebo (n = 71) (B) in patients with baseline vitamin D less than or equal to 20 ng/mL, (C) in patients with baseline vitamin D 21–30 ng/mL and (D) baseline vitamin D greater than 30 ng/mL. The dotted vertical lines represent protocol-directed imaging assessments at Week 13 and Months 12, 24 and 36. Reported P values are for the unstratified logrank test.
