Incidence of second hip fractures and associated mortality in Taiwan: A nationwide population-based study of 95,484 patients during 2006e2010

Abstract

Objectives: The aim of the study is was to determine the incidence and mortality of second hip fractureusing a nationwide database.Patients and methods: A nationwide epidemiological study was conducted using the Taiwan NationalHealth Insurance Research Database from 2001 to 2011. Patients older than 50 years with hip fracturesfrom 2006 to 2011 were included in the study. A total of 95,484 hip fractures were identiŞed, withsubsequent second hip fracture occurred in 4102 of them.Results: The incidence rate ratio of second hip fracture showed a 7.13 fold of risk of further hip fracture in3 months, 5.21 fold in one year, and remained more than 2 fold in the end of 6th year when comparedwith the general population. The 6-year cumulative incidence of a second hip fracture was higher infemale (8.0%) than in male (6.2%). A signiŞcantly higher 1-year mortality rate was seen after a second hipfracture (18.8%) compared to theŞrst hip fracture (14.1%) (p < 0.05). Men had higher 1- and 5-yearmortality rates after second hip fractures (12.1% and 41.2%, respectively) than women (17.4% and47.3%, respectively).Conclusions: Patients with hip fractures would have a 2e7 fold of risk of a second fracture within 6 years.Women were more prone to a second hip fracture than men but men had a higher mortality rate.© 2016 Turkish Association of Orthopaedics and Traumatology. Publishing services by Elsevier B.V. This isan open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/)