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Table 1 Descriptive characteristics and prevalence of cognitive spectrum disorders for all emergency admissions for people aged ≥ 65 years

From: Epidemiology and outcomes of people with dementia, delirium, and unspecified cognitive impairment in the general hospital: prospective cohort study of 10,014 admissions

 

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)

  
  1. aThese patients are also included in ‘any known dementia’ and ‘any delirium’
  2. bAMT score < 8, no delirium, no known dementia
  3. CAM Confusion Assessment Method, OPRAA Older Persons Routine Acute Assessment