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KMID : 1100120220290020075
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대한골대사학회지
2022 Volume.29 No. 2 p.75 ~ p.82
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Osteoporotic Fractures among Selective Estrogen Receptor Modulator Users in South Korea: Analysis Using National Claims Database
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Park Jung-Wee
Lee Young-Kyun
Choi Yang-Seon
Ha Yong-Chan
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Abstract
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Background: We evaluated (1) compliance with selective estrogen receptor modulator (SERM) use in postmenopausal women; and (2) the risk of osteoporotic fractures according to compliance and other patient characteristics.
Methods: National claims data of postmenopausal women from January 2013 to December 2014 were reviewed. Demographics, comorbidities, type of medical institution, and patient compliance were investigated. Compliance was measured according to medication possession ratio (MPR) and the patients were classified into compliant (MPR ≥80%) or non-compliant (MPR <80%) groups. Osteoporotic fractures were followed up for 2 years after prescription.
Results: Among 15,166 postmenopausal women, 4,130 were categorized as compliant. Osteoporotic fractures were confirmed in 669 patients. The hip fracture rate in the non-compliant group (0.39%) was marginally higher than that in the compliant group (0.36%; P=0.06). Compared to age 50 to 54 years, age 55 to 59 years showed protection against fractures (hazard ratio [HR], 0.57; 95% confidence interval [CI], 0.379-0.857; P=0.007), while those over 70 years showed a higher risk of fractures (HR, 2.035; 95% CI, 1.485-2.789; P<0.0001 for age 70-74 years; HR, 2.197; 94% CI, 1.588-3.041; P<0.0001 for age 75-79 years; and HR, 3.53; 95% CI, 2.493-4.999; P<0.0001 for age ≥80 years). Patients with mild (HR, 1.29; 95% CI, 1.088-1.530; P=0.0034) and moderate (HR, 1.286; 95% CI, 1.002-1.652; P=0.0486) comorbidities were associated with higher risks of fractures compared to those without comorbidities.
Conclusions: Among postmenopausal women with osteoporosis, only 27.2% complied with SERM therapy. A marginal difference in hip fracture rate was observed between the compliant and non-compliant groups. Older age and severe comorbidities were associated with higher risks of osteoporotic fractures.
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KEYWORD
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Compliance, Medication adherence, Osteoporosis, Osteoporotic fractures, Selective estrogen receptor modulators
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