Cohort characteristics by diabetes status
| Total cohort | Diabetes | No diabetes* | No HbA1c measurement | |
| n (%) | 6576 | 1165 (17.8) | 2049 (31.2) | 3362 (51.1) |
| Female | 3671 (55.8) | 548 (47.0) | 1318 (64.3) | 1805 (53.7) |
| Age | 64 (55–72) | 67 (59.5–74) | 63 (54–71) | 63 (54–73) |
| Had an HbA1c in the past 12 months (n, %) | 2746 (41.8) | 697 (59.8) | 2049 (100.0) | 0 |
| HbA1c (%, median (IQR)) | 5.8 (5.5–6.2) | 7.0 (6.5–7.9) | 5.6 (5.4–5.9) | – |
| Unadjusted length of stay (days, median (IQR)) | 5 (2–11) | 6 (3–14) | 3 (2–6) | 5 (2–11) |
| Surgery category | ||||
| Elective | 2217 (33.7) | 314 (19.9) | 668 (34.0) | 967 (26.8) |
| Urgent | 3011 (45.8) | 993 (63.0) | 6 (0.0) | 1479 (41.2) |
| Emergent | 1343 (20.4) | 268 (17.0) | 1286 (65.5) | 1146 (31.9) |
*HbA1c <6.5% and no diagnosis of diabetes in the discharge abstract database (DAD).
HbA1c, hemoglobin A1c.