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Death hazard ratios of African-American (AA) versus non-AA patients across three mutually exclusive strata of no active vitamin D (n = 18,981, right section), low paricalcitol dose (>0 and <10 µg/week, n = 17,347, middle section) and high paricalcitol dose (≥10 µg/week, n = 32,327, left section). Survival analyses were performed in unadjusted and case-mix-adjusted formats (see text for list of covariates).
