Table 3

Adjusted odds ratios for selected individual covariates for 30-day and 365-day mortality multilevel models
30-day mortality 365-day mortality
AOR 95% CI p-value AOR 95% CI p-value
Sex
 Male (ref) 1.00 .211 1.00 .853
 Female 1.04 0.98-1.11 1.01 0.95-1.06
Age group
 25-34 1.20 0.79-1.83 <.001 0.92 0.61-1.37 <.001
 35-44 0.73 0.59-0.91 0.58 0.48-0.72
 45-54 0.80 0.70-0.92 0.74 0.66-0.83
 55-64 (ref) 1.00 1.00
 65-74 1.52 1.38-1.68 1.70 1.57-1.85
 75-84 2.30 2.10-2.53 3.09 2.86-3.34
Comorbid conditionsa
 Shock 11.54 10.12-13.16 <.001 7.94 6.94-9.09 <.001
 Severe liver disease 3.80 2.36-6.11 <.001 2.60 1.63-4.17 <.001
 Cardiac dysrhythmias 2.69 2.53-2.86 <.001 2.18 2.06-2.30 <.001
 Dementia 2.30 1.87-2.84 <.001 2.72 2.25-3.30 <.001
 Cancer 2.18 1.92-2.47 <.001 4.45 4.00-4.95 <.001
 Acute renal failure 2.02 1.82-2.25 <.001 2.00 1.82-2.19 <.001
 Cerebrovascular disease 1.53 1.33-1.77 <.001 1.47 1.29-1.66 <.001
 Peripheral vascular disease 1.32 1.11-1.57 <.001 1.30 1.12-1.51 <.001
 Pulmonary disease 1.25 1.14-1.37 <.001 1.56 1.45-1.67 <.001
 Pulmonary oedema 1.22 0.99-1.51 .056 1.50 1.26-1.80 <.001
 Congestive heart failure 1.20 1.12-1.30 <.001 1.81 1.70-1.92 <.001
 Paraplegia 1.08 0.89-1.31 .424 1.43 1.21-1.69 <.001
 Chronic renal failure 1.06 0.95-1.17 .282 1.56 1.44-1.70 <.001
 Liver disease 0.97 0.55-1.69 .913 2.42 1.55-3.79 <.001
 Diabetes with complications 0.89 0.82-0.97 .007 1.10 1.03-1.18 .003
 Connective tissue disorder 0.81 0.62-1.04 .096 1.18 0.97-1.43 .090
Remoteness of residenceb
 Major city (ref) 1.00 .223 1.00 .685
 Inner regional 0.95 0.86-1.06 0.95 0.87-1.04
 Outer regional 1.08 0.94-1.24 1.00 0.89-1.12
 Remote/very remote 1.16 0.84-1.58 0.96 0.73-1.27
Socio-economic statusc
 1st quintile - least disadvantaged (ref) 1.00 .033 1.00 <.001
 2nd quintile 1.15 0.99-1.32 1.11 0.98-1.25
 3rd quintile 1.10 0.95-1.28 1.18 1.04-1.34
 4th quintile 1.17 1.00-1.36 1.23 1.08-1.39
 5th quintile - most disadvantaged 1.27 1.08-1.48 1.32 1.16-1.51

Adjusted odds ratios for selected covariates from Model 5A for 30-day mortality and Model 5B for 365-day mortality.

AOR, adjusted odds ratio; CI, confidence interval; Ref, referent group in the analysis.

a Comorbid conditions with one-year look-back, including comorbidities on current admission and any admissions in the previous year.

b Accessibility/Remoteness Index of Australia (ARIA+) based on statistical local area of residence.

c Socio-Economic Indices for Areas (SEIFA) Index of Relative Socio-Economic Disadvantage population quintiles based on statistical local area of residence.

Randall et al.

Randall et al. BMC Public Health 2012 12:281   doi:10.1186/1471-2458-12-281

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