Table 2.
Baseline characteristics derived from longitudinal study populations
| Characteristic | Studies reporting characteristic, N (%) | Category | n (%) or range |
|---|---|---|---|
| Study type | 42 (100%) | Prospective Retrospective Predictive model Registry |
27 (64.3%) 10 (23.8%) 3 (7.1%) 2 (4.8%) |
| Age (years) | 42 (100%) | – | 29–100 |
| Race/ethnicitya | 30 (71.4%) | Caucasian Black Asian Other |
13 (43.3%) 10 (33.3%) 11 (36.7%) 11 (36.7%) |
| CKD stage determination | 42 (100%) | CKD stage reported CKD stage inferred CKD undetermined |
2 (4.8%) 36 (85.7%) 4 (9.5%) |
| BMI (kg/m2) | 40 (95.2%) | – | 16.5–44.9 |
| Diabetes duration (years) | 35 (83.3%) | – | 1–40 |
| HbA1c (%) | 39 (92.9%) | – | 5.4–11.9% |
| Systolic BP (mm Hg) | 41 (97.6%) | – | 100–182 |
| Diastolic BP (mm Hg) | 37 (88.1%) | – | 53–130 |
| eGFR (ml/min/1.73m2) | 38 (90.5%) | – | 10–228 |
| eGFR assessment methodb | 37 (88.1%) | MDRD CKD-EPI JSN Cockcroft-Gault 51 Cr-EDTA Iohexal clearance Iothalamide clearance |
16 (43.2%) 10 (27.0%) 6 (16.2%) 3 (8.1%) 2 (5.4%) 1 (2.7%) 1 (2.7%) |
| ACR (mg/gCR) | 22 (52.4%) | – | 0.5–8603 |
| sUA (mg/dL) | 3 (7.1%) | – | 4.9–7.4 |
CKD chronic kidney disease, BMI body mass index, HbA1c hemoglobin A1c, BP blood pressure, eGFR estimated glomerular filtration rate, MDRD modification of diet in renal disease, CKD-EPI chronic kidney disease epidemiology, JSN Japanese society of nephrology, ACR albuminuria-to-creatinine ratio, sUA serum uric acid
aMore than one type of race/ethnicity was reported in multiple studies
bMore than one assessment method was obtained in two studies