Table 4 Survival models for study-defined delirium

Delirium symptom clusters

Inattention

2637

3

1.36

1.16

1.58

<0.01

Acute change

2184

13

1.57

1.33

1.85

<0.01

Fluctuation

2184

13

1.40

1.21

1.62

<0.01

Drowsiness

2184

13

1.31

1.08

1.57

<0.01

Judged delirium*

2184

13

1.92

1.35

2.74

<0.01

Delirium: final model

2159

38

 Delirium

1.28

1.03

1.60

0.03

 Dementia

1.83

1.63

2.06

<0.01

 Age (per year)

1.08

1.08

1.09

<0.01

 Sex (women versus men)

0.68

0.61

0.75

<0.01

 Illness severity

  None

[Ref]

  Mild

1.47

1.15

1.88

<0.01

  Moderate

1.52

1.10

2.12

<0.01

  Severe

3.14

2.23

4.42

<0.01

Subsyndromal delirium: final model

2159

38

 Sybsyndromal delirium

1.41

1.23

1.62

<0.01

 Dementia

1.62

1.42

1.85

<0.01

 Age (per year)

1.08

1.07

1.09

<0.01

 Sex (women versus men)

0.67

0.61

0.75

<0.01

 Illness severity

  None

[Ref]

  Mild

1.32

1.03

1.70

0.03

  Moderate

1.50

1.10

2.06

0.01

  Severe

2.94

2.10

4.12

<0.01