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. Author manuscript; available in PMC: 2018 Jun 1.
Published in final edited form as: Kidney Int. 2017 Mar 31;91(6):1300–1311. doi: 10.1016/j.kint.2016.10.046

Table 1.

Characteristics of the Joslin ESRD Cohort according to category of progressive renal decline

CATEGORY OF PROGRESSIVE RENAL DECLINE
Characteristics Very Fast Fast Moderate Slow
N=89 N=79 N=123 N=73 P
Men 40.5% 58.2% 56.1% 48.0% 0.28
Age at T1D Dx (y) 13 (9, 18) 12 (7, 16) 13 (8, 17) 10 (6, 16) 0.08
At entry to follow-up (first serum creatinine counted):
Duration of T1D (y) 17 (14, 22) 19 (15, 28) 18 (15, 25) 23 (18, 28) 0.13*
Age (y) 32 (27, 38) 34 (28, 40) 33 (25, 40) 33 (29, 42) 0.22*
HbA1c (%) 10.6 (8.7, 12.4) 9.8 (8.7, 11.0) 9.2 (8.2, 10.0) 8.9 (7.9, 10.3) <0.001
ACR g albumin/g creatinine 1.8 (0.5, 3.3) 1.9 (0.5, 2.6) 1.1 (0.5, 2.3) 0.8 (0.5, 1.7) 0.015
eGFR ml/min 84 (67, 108) 78 (63, 103) 77 (63, 97) 49 (38, 69) <0.001
During follow-up
eGFR slopes (ml/min/year) −22 (−31, −18) −12 (−13, −11) −7.5 (−8.7, −6.4) −3.7 (−4.2, −2.7) By design
Time to ESRD (y) 3.2 (2.2, 4.0) 5.7 (4.4, 7.1) 8.9 (6.7, 11.7) 10.7 (7.6, 14.5) By design
At onset of ESRD
Duration of T1D at ESRD onset(y) 20 (17, 26) 25 (22, 33) 28 (24, 34) 34 (31, 40) <0.001*
Age at ESRD onset (y) 36 (30, 41) 40 (34, 46) 42 (36, 47) 46 (41, 53) <0.001*

Data are median (1st, 3rd quartiles)

Re-analyzed data from Skupien et al. Diabete Care 2016.6