Table 1

Fasting serum calcium and vitamin D concentrationsa

Study subjectsTreatment, daily intakeSerum concentrations
Calcium mg/dl25-OH D2 ng/ml1,25-(OH)2 D3 pg/ml
Group A (n = 14)1500 mg CaCO39.47 ± 0.126.2 ± 2.530.8 ± 2.5
Group B (n = 12)1500 mg CaCO39.52 ± 0.137.3b ± 3.727.4 ± 2.4
400 IU Vitamin D
Group C (n = 13)0.5 μg 1,25(OH)2D39.59 ± 0.0922.0 ± 1.939.8b ± 2.3b
  • a Fasting serum taken at the conclusion of a 6-month chemoprevention study in the number (n) of subjects in each group.

  • b Mean data significantly different from data obtained at study start (P < 0.05).