Table 2 Open in new tab Frailty...

Table 2

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Frailty associations

HFRS

Low risk
(N = 17 642)

Intermediate risk
(N = 3756)

High risk
(N = 578)

P value

Baseline characteristic

Age mean (SD)^●

56.2 (20.2)

55.8 (21.2)

52.8 (19.7)

<.001

Sex (female), N (%)^□

7227

1591

219

.08

Charlson comorbidity index mean (SD)^●

3.1 (1.4)

4.3 (2.1)

5.2 (2.2)

<.001

MUST mean (SD)^●

0.32 (0.8)

0.51 (1.0)

0.63 (1.0)

<.001

Indigenous status^a, N (%)^□

961 (5.4)

119 (3.2)

13 (2.2)

<.001

SEIFA IRSD decile mean (SD)^●

4.3 (2.8)

5.9 (2.5)

3.5 (2.7)

<.001

Outcome

Low vs intermediate
Mean ratio/odds ratio (95% CI)

P value

High vs intermediate
Mean ratio/odds ratio (95% CI)

P value

High vs low
Mean ratio/odds ratio (95% CI)

P value

Continuous (per 1-unit increase)

P value

LOS hours mean (SD) unadjusted

123.5 (175.3)

331.8 (316.7)

0.32 (0.31, 0.34)

<.001

628.3 (621.1)

1.86 (1.71, 2.04

<.001

5.74 (5.28, 6.24)

<.001

1.13 (1.13, 1.13)

<.001

LOS hours mean (SD) adjusted

0.48 (0.47, 0.5)

<.001

1.66 (1.53, 1.79)

<.001

3.46 (3.20, 3.73)

<.001

1.09 (1.08, 1.09)

<.001

30-Day readmission, N (%) unadjusted

3051

1368

0.38 (0.37, 0.40)

<.001

265

1.54 (1.44, 1.64)

<.001

4.00 (3.64, 4.39)

<.001

1.10 (1.09, 1.12)

<.001

30-Day readmission, N (%) adjusted

0.57 (0.55, 0.60)

<.001

1.38 (1.30, 1.46)

<.001

2.40 (2.19, 2.63)

<.001

1.06 (1.05, 1.07)

<.001

Inpatient mortality, N (%) unadjusted

100

0.08 (0.06, 0.10)

<.001

578

2.55 (1.58, 4.12)

<.001

32.03 (19.39, 52.92)

<.001

1.20 (1.19, 1.22)

<.001

Inpatient mortality, N (%) adjusted

0.15 (0.10, 0.20)

<.001

1.88 (0.84, 4.22)

.1262

12.86 (4.51, 36.69)

<.001

1.16 (1.12, 1.20)

<.001

^aInclusive of ‘Aboriginal’, ‘Aboriginal and Torres Strait Islander’ and ‘Torres Strait Islander’

^●Analysis of variance, ^□Pearson’s χ² test

MUST, Malnutrition Universal Screening Tool; HFRS, Hospital Frailty Risk Score; SEIFA IRSD, Socioeconomic Indexes for Areas, Index of Relative Socioeconomic Disadvantage; LOS, length of stay

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