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Kaplan-Meier plots for all-cause mortality (A) and cardiovascular mortality (B) according to bioavailable 25-hydroxyvitamin D [25(OH)D] quartiles, and all-cause mortality (C) and cardiovascular mortality (D) according to free 25(OH)D quartiles among patients with coronary artery disease.
Multivariable-adjusted spline functions demonstrate the relation between bioavailable 25-hydroxyvitamin D and all-cause mortality (A) and cardiovascular mortality (B), and the relation between free 25-hydroxyvitamin D and all-cause mortality (C) and cardiovascular mortality (D). The histogram of the distribution of bioavailable or free 25-hydroxyvitamin D levels is also shown. Deaths were shown in dark brown column, and survivals were shown in light brown column.
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