Bone
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To describe the incidence and epidemiological characteristics of hip fracture (HF) in patients aged 65 years or over in the various autonomous regions (AR) of Spain from the year 2000 to 2002 and to determine which factors affect in-hospital mortality. ⋯ Hip fracture mainly affects elderly women and presents great variability in incidence, seasonality, length of hospital stay and mortality between the different autonomous regions in Spain. Elderly male patients with severe comorbid conditions, who are admitted in winter and in cold climate regions are more at risk of in-hospital mortality.