Crude in-hospital outcomes
| Variable | No CKD (n=4896) | CKD/dialysis (n=101) | Incidence rate* | Unadjusted incidence rate ratio(95% CI) comparing CKD/dialysis to No CKD | P value |
| Any in-hospital complication | 537 (11) | 16 (16) | 9/7 | 1.23 (0.70 to 2.02) | 0.40 |
| Need for red cell transfusions | 406 (8) | n<5 | 1/6 | 0.20 (0.02 to 0.74) | 0.004 |
| Any transfusion | 516 (11) | 11 (10) | 6/7 | 0.88 (0.44 to 1.59) | 0.71 |
| Days in hospital | 5 (2–15) | 7 (3–23) | – | – | 0.052 |
| Days in ICU | 0 (0–3) | 0 (0–5) | 168/148 | 1.14 (0.98 to 1.31) | 0.08 |
| Ventilator days | 0 (0–0) | 0 (0–1) | 75/75 | 1.00 (0.84 to 1.19) | 0.96 |
| In-hospital mortality | 525 (11) | 33 (33) | 19/7 | 2.60 (1.77 to 3.70) | <0.001 |
| Disposition on discharge | <0.001 | ||||
| Home | 3184 (65) | 48 (48) | – | – | |
| Other acute care facility | 461 (9) | 12 (12) | – | – | |
| Nursing home | 93 (2) | n<5 | – | – | |
| Rehabilitation facility | 475 (10) | n<5 | – | – | |
| Other/unknown | 158 (3) | n<5 | – | – |
*CKD/dialysis vs no CKD/1000 inpatient-days.
CKD, chronic kidney disease; ICU, intensive care unit.