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Table 1 Age-adjusted mean values and percentage in relation to renal function

From: Associations between renal impairment and anemia in older, rural Japanese men: the Nagasaki Island study

  Non-chronic kidney diseased Chronic kidney diseasec P
Normal renal functiona Mild renal impairmentb
Number at risk 109 645 351  
Age, years 67.7 ± 6.1 69.6 ± 6.5 72.2 ± 6.7  
Systolic blood pressure, mmHg 143 143 145 0.344
Antihypertensive medication use, % 31.5 34.3 40.6 0.083
Diabetes, % 14.0 12.0 10.7 0.634
History of cardiovascular disease, % 8.8 10.2 17.4 0.003
Body mass index, kg/m2 22.8 23.5 23.9 0.003
Current drinkers, % 56 46.8 51.1 0.126
Current smokers, % 29.1 21.6 15.2 0.004
Serum HDL cholesterol, mg/dL 57 55 52 0.004
Serum triglycerides (TG), mg/dL 116 112 135 <0.001
Serum aspartate aminotransferase (AST), IU/L 27 25 24 0.021
Serum γ-glutamyltraspeptidase (γGTP), IU/L 44 37 46 0.046
Serum creatinine, mg/dL 0.62 0.82 1.18 <0.001
Glomerular filtration rate (GFR), mL/min/1.73 m2 99.6 72.4 49.8 <0.001
  1. aNormal renal function, bmild renal impairment, and cchronic kidney disease were defined as respectively, GFR ≥90 mL/min/1.73 m2, 90 mL/min/1.73 m2 > GFR ≥60 mL/min/1.73 m2, and GFR <60 mL/min/1.73 m2. dNon-chronic kidney disease includes normal renal function and mild renal impairment.