Table 3 Open in new tab Malnutrition...

Table 3

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Malnutrition associations

MUST

Low risk
(N = 17 547)

Intermediate risk
(N = 1899)

High risk
(N = 2530)

P value

Baseline characteristic

Age mean (SD)^●

55.9 (20.4)

57.6 (20.4)

55.9 (20.4)

.002

Sex (female) N (%)^□

7229 (41.2)

765 (40.3)

1043 (41.2)

.74

Charlson comorbidity index mean (SD)^●

3.7 (1.9)

3.6 (1.8)

3.8 (2.0)

.002

HFRS mean (SD)^●

4.7 (4.3)

4.4 (4.2)

5.0 (4.4)

<.001

Indigenous status^a (N)%^□

779 (4.4)

95 (5.0)

219 (8.7)

<.001

SEIFA IRSD decile mean (SD)^●

4.6 (2.8)

4.5 (2.6)

4.3 (2.9)

<.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

LOS hours mean (SD) unadjusted

155.2 (220.3)

210.3 (323.2)

0.83 (0.79, 0.87)

<.001

263.3 (355.9)

1.20 (1.13, 1.27)

<.001

1.44 (1.39, 1.50)

<.001

LOS hours mean (SD) adjusted

0.88 (0.84, 0.91)

<.001

1.13 (1.07, 1.19)

<.001

1.29 (1.25, 1.34)

<.001

30-Day readmission, N (%) unadjusted

3500

436

0.90 (0.88, 0.91)

<.001

748

1.34 (1.23, 1.46)

<.001

1.50 (1.36, 1.65)

<.001

30-Day readmission, N (%) adjusted

0.97 (0.89, 1.04)

.37

1.24 (1.18, 1.30)

<.001

1.29 (1.16, 1.42)

<.001

Inpatient mortality, N (%) unadjusted

101

0.74 (0.63, 0.89)

.0008

1.86 (1.60, 2.17)

<.001

2.50 (2.10, 2.98)

<.001

Inpatient mortality, N (%) adjusted

0.87 (0.76, 1.00)

.05

1.35 (1.12, 1.64)

.002

1.55 (1.26, 1.91)

<.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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