Table 1.
Characteristics of cohort by dialysis modality at 90 d after first RRTa
| Characteristic | HD (n = 14,733; 39,163 person-years) | PD (n = 10,554; 28,857 person-years) | P |
|---|---|---|---|
| Person-years on PD (from day 90) | 2481 (6%) | 20,860 (72%) | |
| Modality at day 0 (among those on PD or HD at day 90) | 14,353 HD (97%) | 7042 (67%) PD | |
| Age (yr; median [IQR]) | 59.2 (46.6 to 69.9) | 61.1 (48.8 to 69.8) | <0.001 |
| BMI | 1461 (10%) | 1131 (11%) | <0.001 |
| underweight | 5326 (36%) | 4055 (38%) | |
| normal | 4605 (31%) | 3401 (32%) | |
| overweight | 3341 (23%) | 1967 (19%) | |
| obese | |||
| Male | 9189 (62%) | 5574 (53%) | <0.001 |
| CAD | 5416 (37%) | 4282 (41%) | <0.001 |
| Diabetes | <0.001 | ||
| type 1 | 484 (4%) | 595 (6%) | |
| type 2 | 4398 (30%) | 3380 (32%) | |
| Chronic lung disease | 2220 (15%) | 1568 (15%) | 0.600 |
| Current cigarette smoking (at time of RRT start) | 2082 (14%) | 1328 (13%) | <0.001 |
| Cerebrovascular disease | 1933 (13%) | 1641 (16%) | <0.001 |
| Peripheral vascular disease | 3480 (24%) | 3027 (29%) | <0.001 |
| Late referral | 3736 (25%) | 2420 (23%) | <0.001 |
| Indigenous | |||
| ATSI | 1275 (9%) | 567 (5%) | <0.001 |
| Maori/PI | 1093 (7%) | 1409 (13%) | |
| Serum creatinine (quartiles at RRT start)b | <0.001 | ||
| <581 | 2594 (27%) | 1883 (31%) | |
| 581 to 750 | 2475 (25%) | 1688 (28%) | |
| 751 to 950 | 2398 (25%) | 1362 (22%) | |
| ≥951 | 2321 (24%) | 1144 (19%) | |
| Serum creatinine (μmol/L)c | 673 (667 to 679) | 644 (638 to 651) | <0.001 |
| eGFR (ml/min per 1.73 m2)d | 7.10 (7.03 to 7.18) | 7.27 (7.17 to 7.37) | <0.010 |
a
ATSI, Aboriginal and Torres Strait Islander; eGFR, estimated GFR; IQR, interquartile range; PI, Pacific Islander.
b
Only for those who started RRT from April 1, 1998; n = 15865 with reported creatinine.
c
Harmonic mean.
d
Arithmetic mean.