Skip to main content

Table 3 Frailty, delirium and risk of hospital mortality

From: Frailty, delirium and hospital mortality of older adults admitted to intensive care: the Delirium (Deli) in ICU study

 

Risk of delirium in ICU

p value1

Crude rate ratio (95% CI)

Adjusted rate ratio (95% CI)

Frailty (17%) versus non-frail (10%)

1.68 (1.18–2.38)

1.71 (1.20–2.43)

0.003

Age (each 10-year increase)

1.02 (0.99–1.06)

1.01 (0.96–1.06)

0.711

Males (14.7%) versus females (10.3%)

1.39 (0.97–2.00)

1.45 (1.01–2.08)

0.042

 

Risk of hospital death

 

Crude rate ratio (95% CI)

Adjusted rate ratio (95% CI)

Frail (19%) versus non-frail (7%)

2.72 (1.86–4.00)

2.54 (1.72–3.75)

< 0.001

Delirium (23%) versus non-delirium (10%)

2.31 (1.51–3.52)

2.03 (1.33–3.12)

0.002

Age (each 10-year increase)

1.02 (0.98–1.06)

1.01 (0.95–1.07)

0.875

Males (11%) versus females (12%)

0.93 (0.64–1.34)

0.94 (0.65–1.37)

0.753

 

Effect modification of delirium on the risk of hospital death due to frailty

 

Deaths/total (%)

Crude rate ratio (95% CI)

Adjusted rate ratio (95% CI)

Non-frail (non-delirium)

35/533 (6.6%)

1.0 (ref)

1.0 (ref)

 

Frail (non-delirium)

49/317 (15.5%)

2.60 (1.64–4.11)

2.24 (1.37–3.67)

0.001

Non-frail (delirium)

6/61 (9.9%)

1.0 (ref)

1.0 (ref)

 

Frail (delirium)

23/66 (35.9%)

4.90 (1.83–13.1)

4.16 (1.50–11.52)

0.004

  1. 1Adjusted for age and sex