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Percent change in PTH over time. The percent change in intact PTH levels over the course of the study is graphed for subjects treated with cholecalciferol (solid circles, solid line) and doxercalciferol (solid triangles, dashed line). The numbers of subjects for months 0, 1, 2, and 3 were 22, 22, 20, and 20, respectively, for the cholecalciferol arm, and 25, 24, 21, and 20 for the doxercalciferol arm.
