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Table 2 Biological baseline characteristics and conditions of dialysis initiation according to age and period

From: The clinical status and survival in elderly dialysis: example of the oldest region of France

  <75 yr ≥75 yr  
  2002-2004 2005-2007 P1 2002-2004 2005-2007 P2 P3
  (n = 197) (n = 146)   (n = 96) (n = 118)   
Serum albumin    NS    0.027* NS
  <35 g/l 63(32.0) 51(34.9)   44(45.8) 50(42.4)   
  ≥35 g/l 78(39.6) 61(41.8)   21(21.9) 44(37.3)   
  Missing 56(28.4) 34(23.3)   31(32.3) 24(20.3)   
Body mass index    NS    NS NS
  <18, 5 kg/m2 9(4.7) 5(3.6)   2(2.3) 7(6.1)   
  18, 5–25 kg/m2 98(51.0) 67(47.9)   51(60.0) 64(56.1)   
  ≥18,5 kg/m2 85(44.3) 68(48.6)   32(37.6) 43(37.7)   
Baseline eGFR    NS    0.047* 0.08
  <7 ml/min/1.73 m2 103(52,3) 59(40,4)   31(32,3) 46(39,0)   
  7–10 ml/min/1.73 m2 47(23,9) 46(31,5)   26(27,1) 38(32,2)   
  ≥10 ml/min/1.73 m2 32(16.2) 32(21.9)   28(29.2) 31(26.3)   
  Missing 15(7.6) 9(6.2)   11(11.5) 3(2.5)   
Pre-dialysis anemia care        
  Hemoglobin    NS    <0.001* 0.005*
   <11 g/dl 112(56.9) 77(52.7)   42(43.7) 74(62.7)   
   ≥11 g/dl 63(32.0) 57(39.0)   3637.5) 41(34.7)   
   Missing 22(11.2) 12(8.2)   18(18.7) 3(2.5)   
  Pre-dialysis ESA treatment 93(47.2) 85(57.8) 0.044* 51(53.1) 67(56.8) NS NS
First treatment modality    0.004*    NS NS
  Peritoneal dialysis 39(19.8) 17(11.6)   35(36.5) 32(27.1)   
  Hemodialysis with fistula 77(39.1) 74(50.7)   18(18.7) 36(30.5)   
  Hemodialysis without fistula 81(41.1) 55(37.7)   43(44.8) 50(42.4)   
In urgency 39(19.8) 25(17.1) NS 16(16.7) 19(16.1) NS NS
  1. P1. P-value <75 years (2002-2004 vs 2005-2007).
  2. P2. P-value ≥75 years (2002-2004 vs 2005-2007).
  3. P3. P-value Age x Period.
  4. eGFR Estimated glomerular filtration rate, ESA erythropoietin-stimulating agent, NS Not Significant (with p>0.1).