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KMID : 0386720100220040305
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Journal of the Korean Hip Society
2010 Volume.22 No. 4 p.305 ~ p.311
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Identification and Validation of Osteoporotic Hip Fracture Using the National Health Insurance Database
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Park Chan-Mi
Jang Sun-Mee
Jang Su-Hyun
Ha Yong-Chan
Yoon Hyun-Koo
Shin Chan-Soo
Kim Deog-Yoon
Lee Seong-Su
Choi Hyung-Jin
Kim Bom-Taeck
Choi Ji-Yeob
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Abstract
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Purpose: The aim of this study was to develop and validate identification criteria for the cases of osteoporotic hip fracture using the National Health Insurance Database, and we calculated the incidence rate of osteoporotic hip fracture in the Korean population using these criteria.
Materials and Methods : The criteria to identify osteoporotic hip fracture using a diagnosis code, a procedure code, the type and number of medical service usages and the patients’ ages were developed via discussions among experts.
These criteria were validated by using a hip fracture cohort in which all the genuine osteoporotic hip fracture patients in the Jeju area were identified by reviewing the registered medical records and radiographs. By applying the identification criteria to the National Health Insurance Database that was accumulated until June 2009, we calculated the incidence rate of osteoporotic hip fracture in patients between 50 and 100 years of age in 2008.
Results: The identification criteria had a sensitivity of 93.1% and a positive predictive value of 77.4%. A total of 20,432 osteoporotic hip fracture cases were identified in 2008, and the incidence rate was 15.7 cases per 10,000 persons. The osteoporotic hip fracture incidence rate for females was 20.7 (per 10,000persons), and this was 2.1 times higher than that for the males (9.8case per 10,000persons), and the rates were increased with age.
Conclusion: The incidence of osteoporotic hip fracture that occurred on a nationwide scale can be more precisely estimated by using the National Health Insurance Database with its comprehensive information on the overall details of treatment as well as the diagnosis codes, and so the incidence of osteoporotic hip fracture can be reliably calculated for each year. The results from this research could be used as evidence in a hip fracture management plan for establishing Korean Health policy.
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KEYWORD
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Osteoporotic hip fracture, Incidence rate, National Health Insurance Database
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