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Table 1 Demographic characteristics of participants by 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
Age 46.5 ± 15.7 32.3 ± 12.1 46.5 ± 14.0 67.7 ± 9.9 < 0.001
Male 2,379 (100) 456 (19.2) 1,835 (77.1) 88 (3.7)  
Female 3,176 (100) 260 (8.2) 2,518 (79.3) 398 (12.5)  
eGFR 76.4 ± 12.2 96.7 ± 5.6 75.3 ± 8.2 55.9 ± 5.5 < 0.001
Proteinuria (%)      0.141
   Negative 94.4 93.3 94.9 91.6  
   Mild 4.8 5.9 4.5 6.1  
   Heavy 0.8 0.7 0.6 2.3  
Co-morbidities (%)      
   Diabetes mellitus 7.6 3.7 7.0 19.0 < 0.001
   Hypertension 25.3 11.0 24.1 55.3 < 0.001
   Metabolic syndrome 29.4 13.8 28.4 60.0 < 0.001
   Anemia 11.2 9.5 11.0 16.0 0.001
   Ischemic heart disease 2.2 0.4 2.0 6.0 < 0.001
   Cerebrovascular disease 2.2 0.5 1.8 8.2 < 0.001
  1. Data are expressed as the mean ± standard deviation or a percentage. eGFR calculated using the modified MDRD formula [21]. Ischemic heart disease included angina pectoris and myocardial infarction. eGFR, estimated glomerular filtration rate; MDRD, Modification of Diet in Renal Disease.