| Characteristic | Condition; no. (%) of admissions† | |||||
|---|---|---|---|---|---|---|
| Total cohort n = 136 208 | Pneumonia n = 6804 | Heart failure n = 6341 | Chronic obstructive pulmonary disease n = 5574 | Urinary tract infection n = 5466 | Stroke n = 4912 | |
| Age, median (IQR), yr | 73 (57-84) | 80 (64-87) | 83 (75-88) | 77 (66-84) | 80 (69-87) | 76 (64-84) |
| Comorbidities, median (IQR) | 6 (3-9) | 5 (3-8) | 7 (5-10) | 6 (3-8) | 6 (4-9) | 5 (3-7) |
| Intensive care unit use‡ | 10 031 (9.9) | 460 (8.6) | 409 (8.0) | 589 (12.6) | 185 (5.3) | 337 (14.5) |
| Death in hospital | 8916 (6.5) | 534 (7.8) | 491 (7.7) | 293 (5.3) | 150 (2.7) | 410 (8.3) |
| 30-day readmission§ | 14 387 (10.9) | 620 (9.4) | 990 (16.1) | 893 (16.5) | 663 (12.4) | 268 (5.7) |
Note: IQR = interquartile range.
*Identified with the use of Canadian Institute for Health Information case-mix groups.
†Except where noted otherwise.
‡Intensive care or step-up unit. Does not include data for 34 453 patients at Trillium Health Partners (data not available at the time of submission).
§Readmission to general internal medicine service at 1 of the participating hospitals within 30 days of discharge. Patients with no health insurance number could not be linked across admissions and were excluded from this calculation, as were patients discharged within the last 30 days of the study.