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. 2021 Sep;32(9):2331–2351. doi: 10.1681/ASN.2021010105

Table 1.

Clinical characteristics of subjects included in the study cohorts

Characteristics Late DKD Early DKD
Joslin T1D Discovery Cohort (n=239)a Joslin T2D Replication Cohort (n=136)a Joslin T1D Validation Cohort (n=243)b Pima T2D Validation Cohort (n=154)a Pima T2D Cohort for Auxiliary Study (n=105)c
At baseline
 Male/female, n 117/122 89/47 133/110 43/111 29/76
 Age (yr), mean±SD 44±10 60±6 39±9 46±10 45±10
 Duration of DM (yr), mean±SD 30±9 16±9 26±9 16±7 15±6
 HbA1c (%), mean±SDd 8.6±1.6 7.5±1.8 9.0±1.7 9.4±2.3 9.2±2.3
 SBP (mmHg), mean±SD 136±20 139±19 131±19 125±14 122±13
 DBP (mmHg), mean±SD 77±11 75±11 78±10 77±9 77±9
 ACR (mg/g), median (IQR) 793 (274–1855) 255 (57–1092) 579 (212–1173) 55 (13–357) 40 (12–124)
 GFR (ml/min), mean±SDe 42±10 49±11 97±21 150±47 151±47
During follow-up
 New cases of ESKD within 10 yr, n (%) 127 (53) 43 (32) 50 (21) 37 (24) 15 (14)

DM, diabetes mellitus; SBP, systolic BP; DBP, diastolic BP; IQR, interquartile range.

a

These study cohorts were used to study KRIS proteins, and their clinical characteristics were previously reported.12

b

This study cohort was used to study TNF-related proteins, and clinical characteristics were previously reported.13

c

This subgroup from the Pima T2D validation cohort had kidney biopsies and was used to study kidney structural lesions.

d

HbA1c was standardized to Diabetes Control and Complications Trial units.14,18

e

In the Joslin cohorts, eGFR was determined using serum creatinine concentrations.14 In the Pima cohort, GFR (ml/min) was directly measured by urinary clearance of iothalamate.18