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Dietary Reference Intakes for Calcium, Phosphorus, Magnesium, Vitamin D, and Fluoride (1997) / Chapter Skim
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Appendix E Model for Estimating Calcium Intake for Desirable Calcium Retention
Pages 394-398

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From page 394...
... The model was used to determine an estimate of calcium intake required to achieve the selected value for desirable calcium retention.) As clescribeci in the initial version of this report, when the application of this model to the data was proposed it was thought that it could predict the lowest value of the plateau intake of calcium at which mean percent maximal calcium retention would occur in a group of inclivicluals.
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From page 395...
... For some of the curves to which it was applied, this level of intake was associated with a mean percent maximal retention of 26 percent, which macle it difficult to justify as a goal for the average intake of inclivicluals. Given these concerns, the DRI Committee, supporting the concept that maximizing calcium retention and decreasing calcium loss to the extent possible via calcium intake is of benefit to maintaining bone mineral content and subsequent risk of fracture, haci the ciata recalculated using the Jackman et al.
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From page 396...
... FIGURE E-1 Calcium retention as a function of intake in adolescents. The equation which describes the nonlinear regression model of Blackman et al.
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From page 397...
... The equation which describes the nonlinear regression model of Jackman et al.
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From page 398...
... (1984~. The equation which describes the nonlinear regression model of Blackman et al.
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Key Terms

  • calcium intake
  • percent maximal
  • desirable calcium
  • maximal retention
  • sweat loss

  • calcium loss
  • initial version
  • mean percent
  • statistical issues
  • balance studies

  • absolute retention
  • strict statistical
  • dri committee
  • desirable level
  • confidence interval

  • nonlinear asymptotic
  • regression curve
  • raised related
  • average intake
  • revised approach

  • bone mineral
  • maximal calcium
  • asymptotic relationship
  • plateau intake
  • specified desirable

  • subsequent risk
  • minimize calcium
  • mineral content
  • issue raised
  • decreasing calcium


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