The relation between dietary calcium, calcium, and vitamin D supplements and the risk of fractures of the hip (n=332), ankle (n=210), proximal humerus (n=241), wrist (n=467), and vertebrae (n=389) was investigated in a cohort study involving 9,704 US white women aged 65 years or older.
Baseline assessments took place in 1986-1988 in four US metropolitan areas.
Dietary calcium intake was assessed at baseline with a validated food frequency questionnaire.
Data on new nonvertebral fractures were collected every 4 months during a mean of 6.6 years of follow-up ; identification of new vertebral fractures was based on comparison of baseline and follow-up radiographs of the spine done a mean of 3.7 years apart.
Results were adjusted for numerous potential confounders, including weight, physical activity, estrogen use, protein intake, and history of falls, osteoporosis, and fractures.
There were no important associations between dietary calcium intake and the risk of any of the fractures studied.
Current use of calcium supplements was associated with increased risk of hip (relative risk=1.5,95% confidence interval 1.1-2.0) and vertebral (relative risk=1.4,95% confidence interval 1.1-1.9) fractures ; current use of Tums antacid tablets was associated with increased risk of fractures of the proximal humerus (relative risk=1.7,95% confidence interval 1.3-2.4).
There was no evidence of a protective effect of vitamin D supplements. (...)
Mots-clés Pascal : Ostéoporose, Fracture, Epidémiologie, Régime alimentaire enrichi, Calcium Ion, Vitamine D, Chimiothérapie, Prévention, Femelle, Vieillard, Homme, Etats Unis, Amérique du Nord, Amérique, Système ostéoarticulaire pathologie, Ostéopathie, Traumatisme
Mots-clés Pascal anglais : Osteoporosis, Fracture, Epidemiology, Supplemented diet, Calcium Ions, Vitamin D, Chemotherapy, Prevention, Female, Elderly, Human, United States, North America, America, Diseases of the osteoarticular system, Bone disease, Trauma
Notice produite par :
Inist-CNRS - Institut de l'Information Scientifique et Technique
Cote : 97-0325516
Code Inist : 002B16H. Création : 12/09/1997.