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. 2019 Feb 22;109(3):544–553. doi: 10.1093/ajcn/nqy291

FIGURE 2.

FIGURE 2

Time to first composite event (death or pulmonary exacerbation) by treatment group in the vitamin D for the Immune System (DISC) Study. The Kaplan–Meier curve for the time to first composite event by vitamin D (dotted line) and placebo (solid line) group is displayed. There were no differences in time to first composite event in the vitamin D and placebo groups in adults with cystic fibrosis followed for 1 y as assessed by Cox proportional hazards regression (95% CI: 0.54, 1.34, P = 0.48).