| All admissions – received an OPRAA assessment N = 10,014 (79.0% of all admissions) | All admissions – did not receive an OPRAA assessment N = 2659 (21.0% of all admissions) | Incident admissions – received an OPRAA assessment N = 5569 (77.3% of incident admissions) | Incident admissions – did not receive an OPRAA assessment N = 1632 (22.7% of incident admissions) | ||||
---|---|---|---|---|---|---|---|---|
Age (mean (95% CI)), years |  | 79.3 (79.2–79.5) |  | 77.0 (77.6–77.3) |  | 79.1 (79.5–79.9) |  | 76.2 (75.9–76.6) |
Female | 5679 | 56.7 (55.7–57.7) | 1367 | 51.4 (49.5–53.3) | 3121 | 56.0 (54.7–57.3) | 850 | 52.1 (49.7–54.5) |
Admitted from care home | 799 | 8.0 (7.5–8.5) | 155 | 5.8 (5.0–6.8) | 382 | 6.9 (6.3–7.6) | 76 | 4.7 (3.8–5.8) |
Length of stay (mean days (95% CI)) |  | 16.8 (16.2–17.4) |  | 7.4 (6.5–8.3) |  | 16.5 (15.6–17.4) |  | 6.7 (5.6–7.8) |
0–2 days | 3141 | 31.4 (30.5–32.3) | 1770 | 66.6 (64.8–68.4) | 1867 | 33.5 (32.3–34.8) | 1145 | 70.2 (67.9–72.4) |
3–5 days | 1652 | 16.5 (15.8–17.2) | 285 | 10.7 (9.6–11.9) | 897 | 16.1 (15.2–17.1) | 150 | 9.2 (7.9–10.7) |
6–9 days | 1503 | 15.0 (14.3–15.7) | 180 | 6.8 (5.9–7.8) | 797 | 14.3 (13.4–15.2) | 93 | 5.7 (4.7–6.9) |
10+ days | 3718 | 37.1 (36.2–38.1) | 424 | 16.0 (14.7–17.4) | 2008 | 36.1 (34.8–37.4) | 244 | 15.0 (13.3–16.8) |
Cognitive spectrum disorder | 3854 | 38.5 (37.5–39.4) |  | Not assessed | 1985 | 35.6 (34.4–36.9) |  | Not assessed |
Any known dementia | 1735 | 17.3 (16.6–18.1) |  |  | 833 | 15.0 (14.1–16.0) |  |  |
Known dementia alone (no delirium) | 940 | 9.4 (8.8–10.0) |  |  | 444 | 8.0 (7.3–8.7) |  |  |
Delirium superimposed on known dementiaa | 795 | 7.9 (7.4–8.5) |  |  | 389 | 7.0 (6.3–7.7) |  |  |
Any delirium | 2463 | 24.6 (23.8–25.5) |  |  | 1290 | 23.2 (22.1–24.3) |  |  |
Full syndrome delirium (CAM+) | 765 | 7.6 (7.1–8.2) |  |  | 398 | 7.2 (6.6–7.9) |  |  |
Clinical history suggestive of delirium only | 1698 | 17.0 (16.2–17.7) |  |  | 892 | 16.0 (15.1–17.0) |  |  |
Delirium alone (no dementia) | 1668 | 16.7 (16.0–17.4) |  |  | 901 | 16.2 (15.2–17.2) |  |  |
Unspecified cognitive impairmentb | 451 | 4.5 (4.1–4.9) |  |  | 251 | 4.5 (4.0–5.1) |  |  |