Table 2 In hospital length of stay, 30-day mortality, and 1-year mortality by cognitive status

All incident admissions (n = 7201)

14.3 (13.6–15.0)

9.9 (9.2–10.6)

29.0 (28.0–30.1)

Did not receive OPRAA assessment (n = 1632)

6.7 (5.6–7.8)^b

7.1 (6.0–8.5)^c

22.2 (20.3–24.3)^d

Received OPRAA assessment (n = 5569)

16.8 (15.6–17.4)

10.7 (9.9–11.5)

31.0 (29.8–32.2)

No cognitive spectrum disorder (n = 3584)

11.8 (11.0–12.6)^e

9.0 (8.1–10.0)^f

26.0 (24.6–27.5)^g

Cognitive spectrum disorder (n = 1985)

25.0 (23.1–26.9)

13.6 (12.2–15.2)

40.0 (37.9–42.2)

Known dementia alone (group 1, n = 444)

20.1 (16.9–23.3)^h

12.8 (10.0–16.2)ⁱ

43.9 (39.4–48.5)^j

Delirium alone (group 2, n = 901)

23.0 (20.3–25.6)

13.6 (11.5–16.0)

36.2 (33.1–39.4)

Delirium superimposed on known dementia (group 3, n = 389)

34.3 (28.5–40.0)

14.7 (11.5–18.5)

43.7 (38.9–48.7)

Unspecified cognitive impairment^a (group 4, n = 251)

26.8 (22.5–31.2)

13.2 (9.5–17.9)

41.0 (35.1–47.2)