Table 3. Final calibration equations.

		Intercept	+	Slope	×	Uncalibrated KNHANES HDL-C (mg/dL)
2009 Calibration equation	Standard HDL-C* =	2.460	+	0.872	×	KNHANES 2008, 2009 and 2010 uncalibrated HDL-C
2012 Calibration equation	Standard HDL-C* =	1.096	+	0.952	×	KNHANES 2012, 2013 and 2014 uncalibrated HDL-C
2015 Calibration equation	Standard HDL-C* =	−003.172	+	1.01	×	KNHANES 2011 and 2015 uncalibrated HDL-C

^*Calibration equations were based on the serum HDL cholesterol (mg/dL) through calibration studies. The values of intercept and slope for each equation were calculated by converting the uncalibrated HDL-C (Y) and the CDC reference value (X) (mg/dL) from the original regression equations of the Passing-Bablok fit.

Abbreviations: KNHANES, Korea National Health and Nutrition Examination Survey; HDL-C, high-density lipoprotein cholesterol.