Table 1.
Baseline variables for the study cohort by healthcare sector
| Variable | All patients (N = 6187), n (%) | Public sector ( N= 1042), n (%) | Private sector ( N= 5145), n (%) |
|---|---|---|---|
| Age (years), median (IQR) | 52.5 (41.2–62.5) | 38.0 (28.7–46.3) | 55.0 (45.2–64.3) |
| Age group (years) | |||
| <18 | 82 (1.3) | 56 (5.4) | 26 (0.5) |
| 18–39 | 1143 (18.5) | 451 (43.3) | 692 (13.5) |
| 40–64 | 3469 (56.1) | 501 (48.1) | 2968 (57.7) |
| 65–74 | 1010 (16.3) | 26 (2.5) | 984 (19.1) |
| ≥75 | 483 (7.8) | 8 (0.8) | 475 (9.2) |
| Sex | |||
| Female | 2516 (40.7) | 499 (47.9) | 2017 (39.2) |
| Male | 3671 (59.3) | 543 (52.1) | 3128 (60.8) |
| First RRT modality | |||
| HD | 5088 (82.2) | 430 (41.3) | 4658 (90.5) |
| PD | 1049 (17.0) | 591 (56.7) | 458 (8.9) |
| Transplant | 50 (0.8) | 21 (2.0) | 29 (0.6) |
| Ethnicity | |||
| Black | 3338 (53.9) | 689 (66.1) | 2649 (51.5) |
| White | 1086 (17.6) | 52 (5.0) | 1034 (20.1) |
| Mixed ancestry | 865 (14.0) | 224 (21.5) | 641 (12.5) |
| Indian/Asian | 805 (13.0) | 57 (5.5) | 748 (14.5) |
| Other/Unknown | 93 (1.5) | 20 (1.9) | 73 (1.4) |
| Diabetes | |||
| Diabetes present | 2879 (46.5) | 199 (19.1) | 2680 (52.1) |
| No diabetes | 2923 (47.2) | 796 (76.4) | 2127 (41.3) |
| No data | 385 (6.2) | 47 (4.5) | 338 (6.6) |
| Primary diagnosis | |||
| Hypertensive renal disease | 2246 (36.3) | 212 (20.4) | 2034 (39.5) |
| Aetiology unknown | 1824 (29.4) | 544 (52.2) | 1280 (24.9) |
| Diabetic nephropathy | 1252 (20.2) | 41 (3.9) | 1211 (23.5) |
| Glomerular diseasea | 479a (7.7) | 176 (16.9) | 303 (5.9) |
| Cystic kidney disease | 124 (2.0) | 17 (1.6) | 107 (2.1) |
| Otherb | 262 (4.2) | 52 (5.0) | 210 (4.1) |
| Province | |||
| Eastern Cape | 647 (10.5) | 119 (11.4) | 528 (10.3) |
| Free State | 361 (5.8) | 102 (9.8) | 259 (5.0) |
| Gauteng | 1596 (25.8) | 134 (12.9) | 1462 (28.4) |
| KwaZulu-Natal | 1532 (24.8) | 250 (24.0) | 1282 (24.9) |
| Limpopo | 293 (4.7) | 62 (6.0) | 231 (4.5) |
| Mpumalanga | 214 (3.5) | 3 (0.3) | 211 (4.1) |
| North West | 307 (5.0) | 59 (5.7) | 248 (4.8) |
| Northern Cape | 102 (1.7) | 31 (3.0) | 71 (1.4) |
| Western Cape | 1135 (18.3) | 282 (27.1) | 853 (16.6) |
| Hepatitis B status | |||
| Carrier | 102 (1.7) | 13 (1.3) | 89 (1.7) |
| Immune | 440 (7.1) | 229 (22.0) | 211 (4.1) |
| Negative | 4586 (74.1) | 595 (57.1) | 3991 (77.6) |
| No data | 1059 (17.1) | 205 (19.7) | 854 (16.6) |
| Hepatitis C status | |||
| Positive | 31 (0.5) | 5 (0.5) | 26 (0.5) |
| Negative | 4817 (77.9) | 739 (70.9) | 4078 (79.3) |
| No data | 1339 (21.6) | 298 (28.6) | 1041 (20.2) |
| HIV status | |||
| Positive | 633 (10.2) | 104 (10.0) | 529 (10.3) |
| Negative | 4324 (69.9) | 681 (65.4) | 3643 (70.8) |
| No data | 1230 (19.9) | 257 (24.7) | 973 (18.9) |
a
Includes 94 patients with nephropathy related to HIV.
b
Includes all other primary renal diagnoses, comprising 4.2% of the cohort.