Résumé :
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[BDSP. Notice produite par INIST w9R0xsw2. Diffusion soumise à autorisation]. As part of a case-control study, the Auckland Hip Fracture Study (1991-1994), the authors examined associations between impaired vision and risk of hip fracture. Subjects (911 cases and 910 controls aged 60 years or older) completed a questionnaire and had vision measurements taken, including measurements of visual acuity and stereopsis (depth perception). Binocular visual acuity worse than 20/60 was statistically significantly associated with increased risk of hip fracture after adjustment for age, sex, proxy response, hours of activity per week, and height (odds ratio (OR)=1.5 ; 95% confidence interval (Cl) : 1.1,2.0), as was having poor vision (less than 20/100) in both eyes (OR=2.4 ; 95% Cl : 1.0,6.1). Having no depth perception was associated with increased risk (OR=6.0 95% CI : 3.2,11.1), as were categories of decreasing stereopsis (trend p=0.0001), self-reported poor vision (OR=1.4 ; 95% CI : 1.0,1.9), not wearing glasses at the time of the fall (OR=1.2 ; 95% CI : 1.0,1.6), and increasing time since the last eye examination (trend p=0.03). The population attributable risk of hip fracture due to poor visual acuity or stereopsis was 40%. Visual factors are important fall-related factors which influence risk of hip fracture. Risk of hip fracture may be decreased by correcting refractive error, improving stereopsis, and administering regular eye examinations. Am J Epidemiol 2000 ; 152 : 633-9.
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