Table 1.

Baseline variables for the study cohort by healthcare sector

VariableAll 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)
 <1882 (1.3)56 (5.4)26 (0.5)
 18–391143 (18.5)451 (43.3)692 (13.5)
 40–643469 (56.1)501 (48.1)2968 (57.7)
 65–741010 (16.3)26 (2.5)984 (19.1)
 ≥75483 (7.8)8 (0.8)475 (9.2)
Sex
 Female2516 (40.7)499 (47.9)2017 (39.2)
 Male3671 (59.3)543 (52.1)3128 (60.8)
First RRT modality
 HD5088 (82.2)430 (41.3)4658 (90.5)
 PD1049 (17.0)591 (56.7)458 (8.9)
 Transplant50 (0.8)21 (2.0)29 (0.6)
Ethnicity
 Black3338 (53.9)689 (66.1)2649 (51.5)
 White1086 (17.6)52 (5.0)1034 (20.1)
 Mixed ancestry865 (14.0)224 (21.5)641 (12.5)
 Indian/Asian805 (13.0)57 (5.5)748 (14.5)
 Other/Unknown93 (1.5)20 (1.9)73 (1.4)
Diabetes
 Diabetes present2879 (46.5)199 (19.1)2680 (52.1)
 No diabetes2923 (47.2)796 (76.4)2127 (41.3)
 No data385 (6.2)47 (4.5)338 (6.6)
Primary diagnosis
 Hypertensive renal disease2246 (36.3)212 (20.4)2034 (39.5)
 Aetiology unknown1824 (29.4)544 (52.2)1280 (24.9)
 Diabetic nephropathy1252 (20.2)41 (3.9)1211 (23.5)
 Glomerular diseasea479a (7.7)176 (16.9)303 (5.9)
 Cystic kidney disease124 (2.0)17 (1.6)107 (2.1)
 Otherb262 (4.2)52 (5.0)210 (4.1)
Province
 Eastern Cape647 (10.5)119 (11.4)528 (10.3)
 Free State361 (5.8)102 (9.8)259 (5.0)
 Gauteng1596 (25.8)134 (12.9)1462 (28.4)
 KwaZulu-Natal1532 (24.8)250 (24.0)1282 (24.9)
 Limpopo293 (4.7)62 (6.0)231 (4.5)
 Mpumalanga214 (3.5)3 (0.3)211 (4.1)
 North West307 (5.0)59 (5.7)248 (4.8)
 Northern Cape102 (1.7)31 (3.0)71 (1.4)
 Western Cape1135 (18.3)282 (27.1)853 (16.6)
Hepatitis B status
 Carrier102 (1.7)13 (1.3)89 (1.7)
 Immune440 (7.1)229 (22.0)211 (4.1)
 Negative4586 (74.1)595 (57.1)3991 (77.6)
 No data1059 (17.1)205 (19.7)854 (16.6)
Hepatitis C status
 Positive31 (0.5)5 (0.5)26 (0.5)
 Negative4817 (77.9)739 (70.9)4078 (79.3)
 No data1339 (21.6)298 (28.6)1041 (20.2)
HIV status
 Positive633 (10.2)104 (10.0)529 (10.3)
 Negative4324 (69.9)681 (65.4)3643 (70.8)
 No data1230 (19.9)257 (24.7)973 (18.9)
VariableAll 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)
 <1882 (1.3)56 (5.4)26 (0.5)
 18–391143 (18.5)451 (43.3)692 (13.5)
 40–643469 (56.1)501 (48.1)2968 (57.7)
 65–741010 (16.3)26 (2.5)984 (19.1)
 ≥75483 (7.8)8 (0.8)475 (9.2)
Sex
 Female2516 (40.7)499 (47.9)2017 (39.2)
 Male3671 (59.3)543 (52.1)3128 (60.8)
First RRT modality
 HD5088 (82.2)430 (41.3)4658 (90.5)
 PD1049 (17.0)591 (56.7)458 (8.9)
 Transplant50 (0.8)21 (2.0)29 (0.6)
Ethnicity
 Black3338 (53.9)689 (66.1)2649 (51.5)
 White1086 (17.6)52 (5.0)1034 (20.1)
 Mixed ancestry865 (14.0)224 (21.5)641 (12.5)
 Indian/Asian805 (13.0)57 (5.5)748 (14.5)
 Other/Unknown93 (1.5)20 (1.9)73 (1.4)
Diabetes
 Diabetes present2879 (46.5)199 (19.1)2680 (52.1)
 No diabetes2923 (47.2)796 (76.4)2127 (41.3)
 No data385 (6.2)47 (4.5)338 (6.6)
Primary diagnosis
 Hypertensive renal disease2246 (36.3)212 (20.4)2034 (39.5)
 Aetiology unknown1824 (29.4)544 (52.2)1280 (24.9)
 Diabetic nephropathy1252 (20.2)41 (3.9)1211 (23.5)
 Glomerular diseasea479a (7.7)176 (16.9)303 (5.9)
 Cystic kidney disease124 (2.0)17 (1.6)107 (2.1)
 Otherb262 (4.2)52 (5.0)210 (4.1)
Province
 Eastern Cape647 (10.5)119 (11.4)528 (10.3)
 Free State361 (5.8)102 (9.8)259 (5.0)
 Gauteng1596 (25.8)134 (12.9)1462 (28.4)
 KwaZulu-Natal1532 (24.8)250 (24.0)1282 (24.9)
 Limpopo293 (4.7)62 (6.0)231 (4.5)
 Mpumalanga214 (3.5)3 (0.3)211 (4.1)
 North West307 (5.0)59 (5.7)248 (4.8)
 Northern Cape102 (1.7)31 (3.0)71 (1.4)
 Western Cape1135 (18.3)282 (27.1)853 (16.6)
Hepatitis B status
 Carrier102 (1.7)13 (1.3)89 (1.7)
 Immune440 (7.1)229 (22.0)211 (4.1)
 Negative4586 (74.1)595 (57.1)3991 (77.6)
 No data1059 (17.1)205 (19.7)854 (16.6)
Hepatitis C status
 Positive31 (0.5)5 (0.5)26 (0.5)
 Negative4817 (77.9)739 (70.9)4078 (79.3)
 No data1339 (21.6)298 (28.6)1041 (20.2)
HIV status
 Positive633 (10.2)104 (10.0)529 (10.3)
 Negative4324 (69.9)681 (65.4)3643 (70.8)
 No data1230 (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.

Table 1.

Baseline variables for the study cohort by healthcare sector

VariableAll 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)
 <1882 (1.3)56 (5.4)26 (0.5)
 18–391143 (18.5)451 (43.3)692 (13.5)
 40–643469 (56.1)501 (48.1)2968 (57.7)
 65–741010 (16.3)26 (2.5)984 (19.1)
 ≥75483 (7.8)8 (0.8)475 (9.2)
Sex
 Female2516 (40.7)499 (47.9)2017 (39.2)
 Male3671 (59.3)543 (52.1)3128 (60.8)
First RRT modality
 HD5088 (82.2)430 (41.3)4658 (90.5)
 PD1049 (17.0)591 (56.7)458 (8.9)
 Transplant50 (0.8)21 (2.0)29 (0.6)
Ethnicity
 Black3338 (53.9)689 (66.1)2649 (51.5)
 White1086 (17.6)52 (5.0)1034 (20.1)
 Mixed ancestry865 (14.0)224 (21.5)641 (12.5)
 Indian/Asian805 (13.0)57 (5.5)748 (14.5)
 Other/Unknown93 (1.5)20 (1.9)73 (1.4)
Diabetes
 Diabetes present2879 (46.5)199 (19.1)2680 (52.1)
 No diabetes2923 (47.2)796 (76.4)2127 (41.3)
 No data385 (6.2)47 (4.5)338 (6.6)
Primary diagnosis
 Hypertensive renal disease2246 (36.3)212 (20.4)2034 (39.5)
 Aetiology unknown1824 (29.4)544 (52.2)1280 (24.9)
 Diabetic nephropathy1252 (20.2)41 (3.9)1211 (23.5)
 Glomerular diseasea479a (7.7)176 (16.9)303 (5.9)
 Cystic kidney disease124 (2.0)17 (1.6)107 (2.1)
 Otherb262 (4.2)52 (5.0)210 (4.1)
Province
 Eastern Cape647 (10.5)119 (11.4)528 (10.3)
 Free State361 (5.8)102 (9.8)259 (5.0)
 Gauteng1596 (25.8)134 (12.9)1462 (28.4)
 KwaZulu-Natal1532 (24.8)250 (24.0)1282 (24.9)
 Limpopo293 (4.7)62 (6.0)231 (4.5)
 Mpumalanga214 (3.5)3 (0.3)211 (4.1)
 North West307 (5.0)59 (5.7)248 (4.8)
 Northern Cape102 (1.7)31 (3.0)71 (1.4)
 Western Cape1135 (18.3)282 (27.1)853 (16.6)
Hepatitis B status
 Carrier102 (1.7)13 (1.3)89 (1.7)
 Immune440 (7.1)229 (22.0)211 (4.1)
 Negative4586 (74.1)595 (57.1)3991 (77.6)
 No data1059 (17.1)205 (19.7)854 (16.6)
Hepatitis C status
 Positive31 (0.5)5 (0.5)26 (0.5)
 Negative4817 (77.9)739 (70.9)4078 (79.3)
 No data1339 (21.6)298 (28.6)1041 (20.2)
HIV status
 Positive633 (10.2)104 (10.0)529 (10.3)
 Negative4324 (69.9)681 (65.4)3643 (70.8)
 No data1230 (19.9)257 (24.7)973 (18.9)
VariableAll 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)
 <1882 (1.3)56 (5.4)26 (0.5)
 18–391143 (18.5)451 (43.3)692 (13.5)
 40–643469 (56.1)501 (48.1)2968 (57.7)
 65–741010 (16.3)26 (2.5)984 (19.1)
 ≥75483 (7.8)8 (0.8)475 (9.2)
Sex
 Female2516 (40.7)499 (47.9)2017 (39.2)
 Male3671 (59.3)543 (52.1)3128 (60.8)
First RRT modality
 HD5088 (82.2)430 (41.3)4658 (90.5)
 PD1049 (17.0)591 (56.7)458 (8.9)
 Transplant50 (0.8)21 (2.0)29 (0.6)
Ethnicity
 Black3338 (53.9)689 (66.1)2649 (51.5)
 White1086 (17.6)52 (5.0)1034 (20.1)
 Mixed ancestry865 (14.0)224 (21.5)641 (12.5)
 Indian/Asian805 (13.0)57 (5.5)748 (14.5)
 Other/Unknown93 (1.5)20 (1.9)73 (1.4)
Diabetes
 Diabetes present2879 (46.5)199 (19.1)2680 (52.1)
 No diabetes2923 (47.2)796 (76.4)2127 (41.3)
 No data385 (6.2)47 (4.5)338 (6.6)
Primary diagnosis
 Hypertensive renal disease2246 (36.3)212 (20.4)2034 (39.5)
 Aetiology unknown1824 (29.4)544 (52.2)1280 (24.9)
 Diabetic nephropathy1252 (20.2)41 (3.9)1211 (23.5)
 Glomerular diseasea479a (7.7)176 (16.9)303 (5.9)
 Cystic kidney disease124 (2.0)17 (1.6)107 (2.1)
 Otherb262 (4.2)52 (5.0)210 (4.1)
Province
 Eastern Cape647 (10.5)119 (11.4)528 (10.3)
 Free State361 (5.8)102 (9.8)259 (5.0)
 Gauteng1596 (25.8)134 (12.9)1462 (28.4)
 KwaZulu-Natal1532 (24.8)250 (24.0)1282 (24.9)
 Limpopo293 (4.7)62 (6.0)231 (4.5)
 Mpumalanga214 (3.5)3 (0.3)211 (4.1)
 North West307 (5.0)59 (5.7)248 (4.8)
 Northern Cape102 (1.7)31 (3.0)71 (1.4)
 Western Cape1135 (18.3)282 (27.1)853 (16.6)
Hepatitis B status
 Carrier102 (1.7)13 (1.3)89 (1.7)
 Immune440 (7.1)229 (22.0)211 (4.1)
 Negative4586 (74.1)595 (57.1)3991 (77.6)
 No data1059 (17.1)205 (19.7)854 (16.6)
Hepatitis C status
 Positive31 (0.5)5 (0.5)26 (0.5)
 Negative4817 (77.9)739 (70.9)4078 (79.3)
 No data1339 (21.6)298 (28.6)1041 (20.2)
HIV status
 Positive633 (10.2)104 (10.0)529 (10.3)
 Negative4324 (69.9)681 (65.4)3643 (70.8)
 No data1230 (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.

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