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자료유형
학술저널
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저널정보
대한가정의학회 Korean Journal of Family Medicine Korean Journal of Family Medicine 제38권 제5호
발행연도
2017.1
수록면
263 - 269 (7page)

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Background: Friedewald equation is the most widely used method for estimating low-density lipoprotein choles-terol (LDL-C) level. However, due to potential over- or underestimation, many studies have used a modified equa-tion. This study aimed to compare estimates by 4 different equations to directly measured LDL-C concentrations in order to propose the most appropriate method for LDL-C estimation in the Korean population.Methods: We studied data of 4,350 subjects that included total cholesterol, high-density lipoprotein cholesterol (HDL-C), triglyceride (TG), and LDL-C concentrations that had been measured at one university hospital in Seoul. We investigated 4 equations: LDL-C by Friedewald’s original equation (LDL-CF) and its 3 modifications. Pearson correlation analysis was performed to compare these estimates to the direct measurement.Results: Pearson correlation analysis revealed a good correlation among all 4 estimated LDL-C values and the di-rectly measured LDL-C value. The Pearson coefficients were 0.951 for LDL-CF, 0.917 for LDL-C by Hatta equation (LDL-CH), 0.968 for LDL-C by Puavilai equation (LDL-CP), and 0.983 for LDL-C by Martin equation (LDL-CM). Mar-tin equation (LDL-CM) resulted in the best approximation (mean difference from the direct measurement, 5.5 mg/dL; mean percentage difference from the direct measurement, 5.1%) and the best agreement with the direct mea-surement (86.1%). LDL-CP resulted in the second-best approximation (mean difference, 7.0 mg/dL; mean percent-age difference, 6.2%; concordance, 82.5%). LDL-CM was found to be less influenced by TG and HDL-C levels than by LDL-CF.Conclusion: Estimates by Martin equation had the best agreement with direct LDL-C concentrations and both Martin and Puavilai equations were superior to Friedewald equation for estimating LDL-C concentrations in Kore-an adults.

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