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

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

   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
  1. 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.