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Table 1 Characteristics of the study population of patients with delirium (N = 77).

From: Incomplete functional recovery after delirium in elderly people: a prospective cohort study

Patient characteristics

Value

N

Age (years)

mean (SD)

78.5 (7.2)

77

 

range

64–93 years

 

Sex – male

N (%)

34 (44%)

77

Duration of admission

mean days (SD)

38.6 (47.8)

77

 

median (interquartile range)

24 (15–41)

 
 

range

1–292

 

Duration of Delirium

mean days (SD)

6.3 (6.1)

77

 

median (interquartile range)

5 (2–7)

 
 

range

1–35

 

Medications or alcohol as cause of delirium

N (%)

30 (39%)

76

Cause of delirium

N (%)

 

76

   Medications, alcohol

 

30 (39%)

 

   Infection

 

8 (11%)

 

   Cardiac

 

12 (16%)

 

   Metabolic

 

2 (3%)

 

   Other

 

24 (32%)

 

Agitation present

N (%)

12 (18%)

65

Poor recognition of delirium

N (%)

25 (32%)

77

GSS – Frailty

N (%)

 

77

   1 – healthy, independent

 

4 (5%)

 

   2 – mild impairment

 

10 (13%)

 

   3 – moderate impair.

 

26 (34%)

 

   4 – moderate-severe

 

25 (33%)

 

   5 – severe impairment

 

10 (13%)

 

   6 – totally dependent

 

2 (3%)

 

   7 – terminally ill

 

0

 

Dementia

  

77

   None

 

44 (57%)

 

   Mild dementia

 

14 (18%)

 

   Moderate dementia

 

15 (19%)

 

   Severe dementia

 

4 (5%)

 

MMSE score/30 (SD) (on initial assessment)

range 0–27

12.5 (7.4)

75

Barthel Index score (SD)

range

  

   Pre-morbid

42–100

86.6 (17.4)

77

   At hospital discharge

0–100

78.9 (24.9)

71

   At 6 month follow-up

6–100

78.2 (22.3)

50

Mean change in Barthel Index (SD)

   

   Pre-morbid to discharge

 

-8.9 (19.7)

71

   Pre-morbid to 6 month

 

-12.7 (16.9)

50

Functional decline

N (%)

  

   At hospital discharge

 

26 (37%)

70

   At 6 months

 

27 (54%)

50

  1. GSS = Geriatric severity score [21]. MMSE = Mini-Mental State Examination. SD = standard deviation.