Equation	Median of difference (mL/min/1.73m2)	IQR of the difference (mL/min/1.73m2)	30% accuracy (%)	GFR category misclassification rate (%)
Asian	2.61	21.55	47.0	58.1
Korean	11.30	22.41	37.7	67.9
Japanese	−6.30	13.88	52.6	54.9
Thai	3.72	22.88	46.0	60.9
Chinese 1	2.18	24.30	46.5	58.6
Chinese 2	4.00	16.40	57.7	56.3

Abbreviation: IQR, interquartile range.

Notes: Chinese 1 formula was developed by Ma et al,⁸ Chinese 2 formula was developed by Shi et al.⁹