Table 3 Patient characteristics and outcome measures, N = 3,273

Included patient records

1,862

1,411

Patients’ age, mean (SD)

81.0 (6.3)

81.2 (6.5)

0.48

Male patients %

44.4

43.8

0.73

Admitted to a surgical ward %

49.9

47.6

0.20

Admitted to a general hospital %

61.7

59.7

0.27

Delirium risk screening %

50.8

65.4

<0.01

Use of DOS scale %

6.5

10.6

<0.01

Number of nursing interventions

2.1

2.9

<0.01

Recorded delirium diagnoses %

11.2

8.7

0.04