Table 1.
Baseline demographics of the chronic kidney disease (CKD) patient cohort.
| Variable | Total Patients (%) |
|---|---|
| (n = 437) | |
| Age (years) | 9.5 ± 5.3 |
| 0–2 years | 43 (9.8) |
| 2–6 years | 77 (17.6) |
| 6–12 years | 125 (28.6) |
| 12–17 years | 192 (43.9) |
| Sex (male/female) | 299/138 |
| Disease preceding CKD | |
| Primary glomerulopathy * | 61 (14.0) |
| Secondary glomerulopathy * | 60 (13.7) |
| Kidney dysplasia with/out vesico-ureteral reflux | 66 (15.1) |
| Hypoplasia | 181 (41.4) |
| Other | 69 (15.8) |
| CKD stages | |
| I | 79 (18.1) |
| II | 119 (27.2) |
| IIIa ※ | 74 (16.9) |
| IIIb ※ | 71 (16.3) |
| IV | 77 (17.6) |
| V | 17 (3.9) |
| Birth weight (kg) | 3.0 ± 0.7 |
| Birth age (weeks) | 38.3 ± 3.1 |
| Disease duration (years) † | 5.7 ± 4.7 |
| Duration of aggravated renal function (years) ‡ | 2.9 ± 3.4 |
Numerical values are reported as n (%); CKD, chronic kidney disease; n, number of patients. * More detailed data are described in supplementary Table S1; ※ CKD stage III is divided into subgroup stage IIIa and IIIb according to the eGFR (estimated glomerular filtration rate), stage IIIa is an eGFR between 45 and 59 and Stage 3b is an eGFR between 30 and 44; † Disease duration refers to the years between the date of the baseline data collection and the CKD diagnosis date; ‡ Duration of aggravated renal function means the years between the date of the baseline data collection and the date of onset of the preceding disease to CKD.