Table 2.

Multiple linear regression analysis of EQ-5D index score by increase of hemoglobin (1 g/dL)

Hemoglobin (per 1 g/dL)	EQ-5D
	Estimate (SE)	p-value
Model 1	0.0012 ± 0.0005	0.017
Model 2	0.0015 ± 0.0005	0.001
Model 3	0.0016 ± 0.0005	< 0.001

Model 1: adjusted for age and sex

Model 2: adjusted for age, sex, smoking, alcohol drinking, exercise, education, income, and marital status

Model 3: adjusted for age, sex, smoking, alcohol drinking, exercise, education, income, marital status, urban living, diabetes mellitus, hypertension, hypercholesterolemia, chronic kidney disease, total calorie intake, and protein intake

EQ-5D EuroQol five-dimensional questionnaire