Table 3 Distribution of vascular access created timely, created not timely and not created by eGFR slope.

From: Association of glomerular filtration rate slope with timely creation of vascular access in incident hemodialysis

 

VA created timely (n = 676)

VA created not timely (n = 87)

VA not created (n = 224)

P value

eGFR slope by quartile, ml/min/1.73 m2 per year, n (%)

 < 0.001

Q1 (< − 7.79)

158 (57.2)

33 (12.0)

85 (30.8)

 

Q2 (− 7.79 ~  < − 4.30)

175 (72.9)

16 (6.7)

49 (20.4)

 

Q3 (− 4.30 ~  < − 2.44)

172 (71.1)

18 (7.4)

52 (21.5)

 

Q4 (≥ − 2.44)

171 (74.7)

20 (8.7)

38 (16.6)

 

eGFR slope by clinical recommendation, ml/min/1.73 m2 per year, n (%)

 < 0.001

Group 1 (< − 10)

107 (56.0)

22 (11.5)

62 (32.5)

 

Group 2 (− 10 ~  < − 5)

171 (67.1)

22 (8.6)

62 (24.3)

 

Group 3 (− 5 ~  < − 3)

164 (71.9)

16 (7.0)

48 (21.1)

 

Group 4 (≥ -3)

234 (74.8)

27 (8.6)

52 (16.6)

 
  1. The eGFR was calculated using the MDRD equation and the eGFR equation: 186 × serum creatinine−1.154 ×age−0.203 × 0.742 (if female)21,22, and slope was estimated using all eGFRs between the timing upon CKD program enrollment and VA creation or starting hemodialysis—whichever came first. If there were fewer than three eGFR measurements within the aforementioned duration, we would include all eGFR measurements within 1 year prior to VA creation or starting HD—whichever came first.
  2. Significantly different distributions of consequence of vascular access preparation between different eGFR slope groups were tested using the χ2 test. A two-tailed value of P < 0.05 was considered to be statistically significant.
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