•2799 women age 50 -74 years in the US
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•No linear relationship between serum retinol and risk of hip fracture
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•Fracture risk was increased in the:
lowest quintile – HR 1.9 (95% CI:1.1-3.3)
highest quintile – HR 2.1 (95%
CI:1.2-3.6)
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•Both low and high serum retinol may be associated with an increased risk