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| Demographics | Values |
| Mean age, years (95% CI) | 44 (42–46.8) |
| Gender, n (%) | |
| Male | 35 (53) |
| Female | 31 (47) |
| Race, n (%) | |
| Black | 43 (65) |
| Coloured | 17 (23) |
| White | 6 (9) |
| Aetiology of renal failure, n (%) | |
| Hypertension | 50 (76) |
| Unknown | 6 (9) |
| Polycystic kidney disease | 3 (5) |
| Systemic lupus erythematosus | 3 (5) |
| Vesico–ureteric reflux | 2 (3) |
| Sepsis | 1 (2 |
| Glomerulonephritis | 1 (2) |
| Mean BMI, kg/m² (95% CI) | 24.4 (22.6–25.3) |
BMI, body mass index.
