• P Lips, W C Graafmans, M E Ooms, P D Bezemer, and L M Bouter.
• Vrije Universiteit, Amsterdam, The Netherlands.
• Ann. Intern. Med. 1996 Feb 15; 124 (4): 400406400-6.

ObjectiveTo determine whether vitamin D supplementation decreases the incidence of hip fractures and other peripheral bone fractures.DesignProspective, double-blind trial.SettingCommunity setting (Amsterdam and surrounding area).Patients2578 persons (1916 women, 662 men) 70 years of age and older (mean age +/- SD, 80 +/- 6 years) living independently, in apartments for elderly persons, or in homes for elderly persons.InterventionParticipants were randomly assigned to receive either vitamin D3, 400 IU in one tablet daily, or placebo for a maximum of 3.5 years.MeasurementsDietary calcium intake and serum 25-hydroxyvitamin D [25(OH)D] were estimated in a subset of participants. During follow-up, attention was concentrated on hip fractures and other peripheral fractures. The maximal follow-up period was 4 years. The results were evaluated by survival analysis.ResultsMean dietary calcium intake from dairy products was 868 mg/d. Mean serum 25(OH)D concentration in the third year of the study was 23 nmol/L in the placebo group and 60 nmol/L in the vitamin D group. Median follow-up was 3.5 years, and total follow-up was 8450 patient-years. During follow-up, 306 persons in the placebo group and 282 persons in the vitamin D group died (P = 0.20). Hip fractures occurred in 48 persons in the placebo group and 58 persons in the vitamin D group (P = 0.39, intention-to-treat analysis). Other peripheral fractures occurred in 74 persons in the placebo group and 77 persons in the vitamin D group (P = 0.86).ConclusionOur results do not show a decrease in the incidence of hip fractures and other peripheral fractures in Dutch elderly persons after vitamin D supplementation.

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