The association of moderate renal dysfunction with impaired preference-based health-related quality of life: 3rdKorean national health and nutritional examination survey

Table 2 Socioeconomic status, psychological factors, and health-related behavioral patterns of participants stratified to eGFR

		eGFR (mL/min/1.73 m²)
	All (n = 5,555)	≥ 90.0 (n = 716)	60.0-89.9 (n = 4,353)	30.0-59.9 (n = 486)	Pfor trend
Marital status: living without a spouse (%)	28.5	48.6	23.2	46.8	0.001
Occupation (%)					< 0.001
White collar	31.9	34.2	34.0	9.5
Blue collar	26.6	26.1	27.1	22.1
Student/soldier/housewife	25.9	30.2	25.2	26.1
No occupation	15.6	9.5	13.6	42.0
Education (%)					< 0.001
University or higher	25.3	33.1	26.2	4.9
Upper secondary level	49.9	58.8	51.6	21.4
Compulsory education	24.9	8.1	22.2	73.8
Income (US $)	2,090.9 ± 1,489.0	2,221.5 ± 1,326.5	2,166.5 ± 1,509.5	1,298.9 ± 1280.8	< 0.001
Rural residence (%)	22.7	19.0	21.9	35.4	< 0.001
Some or extreme degree of stress (%)	33.9	33.4	33.8	33.6	0.778
Sleep quality: insufficient sleep (%)	35.6	41.1	35.5	29.0	< 0.001
Physical activity: ≤ 3 times per week (%)	13.4	16.2	13.5	5.8	0.145
Smoking: life-time smoker (%)	37.9	46.2	37.9	26.0	< 0.001
Alcohol intake: ≥ once a month (%)	31.2	39.5	32.1	11.6	< 0.001

Data expressed a as a percentage or the mean ± standard deviation. eGFR was calculated using the modified MDRD formula [21]. Upper secondary level of education included middle and high school graduate. Compulsory education meant elementary school graduate or less. eGFR, estimated glomerular filtration rate; MDRD, Modification of Diet in Renal Disease.

ISSN: 1471-2369