From: Acute kidney injury as an independent risk factor for unplanned 90-day hospital readmissions
Full model | Best stepwise model | ||||||
---|---|---|---|---|---|---|---|
OR | 95% CI | p-value | OR | 95% CI | p-value | Variable Inclusion %b | |
Characteristics | |||||||
Age (per 10 years) | 1.19 | (1.14–1.24) | <0.001 | 1.17 | (1.13–1.21) | <0.001 | 100 |
Age term squared | 1.00 | (0.99–1.02) | 0.388 | 12.4 | |||
Male sex | 1.08 | (1.00–1.18) | 0.061 | 26.4 | |||
Residential care | 1.63 | (1.36–1.94) | <0.001 | 1.37 | (1.42–1.98) | <0.001 | 100 |
Deprived (highest vs all other quintiles) | 1.11 | (0.96–1.29) | 0.150 | 15.4 | |||
Rural (settlement <3000) | 0.88 | (0.80–0.97) | 0.008 | 0.86 | (0.78–0.94) | 0.001 | 65.2 |
Admission context | |||||||
Admissions in prior 1 year (per admission) | 1.21 | (1.17–1.25) | <0.001 | 1.23 | (1.18–1.27) | <0.001 | 100 |
Length of stay (per week) | 0.99 | (0.98–1.00) | 0.242 | 7.0 | |||
Emergency admission | 1.81 | (1.64–2.01) | <0.001 | 1.89 | (1.72–2.08) | <0.001 | 100 |
Medical ward admission | 1.09 | (0.99–1.19) | 0.066 | 24.6 | |||
Intensive care admission | 0.88 | (0.68–1.13) | 0.308 | 5.2 | |||
Renal function | |||||||
No AKI | (reference group) | ||||||
AKI stage 1 | 1.57 | (1.36–1.80) | <0.001 | 1.50 | (1.33–1.70) | <0.001 | 100 |
AKI stage 2 | 2.35 | (1.92–2.88) | <0.001 | 2.23 | (1.85–2.68) | <0.001 | 100 |
AKI stage 3 | 2.95 | (2.29–3.80) | <0.001 | 2.80 | (2.22–3.53) | <0.001 | 100 |
Prior AKI count (per episode) | 1.11 | (1.02–1.22) | 0.020 | 47.4 | |||
Baseline eGFR linear terma | 0.89 | (0.82–0.96) | 0.005 | 0.87 | (0.80–0.94) | <0.001 | |
Baseline eGFR squared terma | 1.01 | (1.00–1.02) | 0.001 | 1.01 | (1.01–1.02) | <0.001 | 91.0 |
Discharge creatinine 20% > baseline | 0.93 | (0.80–1.08) | 0.317 | 6.0 | |||
Comorbidity | |||||||
Cancer | 1.59 | (1.38–1.82) | <0.001 | 1.59 | (1.37–1.82) | <0.001 | 100 |
Cardiac failure | 1.32 | (1.12–1.55) | 0.001 | 1.42 | (1.21–1.66) | <0.001 | 88.8 |
Cerebrovascular disease | 1.07 | (0.89–1.27) | 0.471 | 6.0 | |||
Dementia | 1.21 | (0.92–1.60) | 0.174 | 13.2 | |||
Diabetes | 1.33 | (1.15–1.54) | <0.001 | 1.38 | (1.19–1.60) | <0.001 | 92.0 |
Hemiplegia | 0.91 | (0.56–1.47) | 0.691 | 0.4 | |||
Liver disease | 1.19 | (0.86–1.66) | 0.299 | 11.2 | |||
Myocardial infarction | 1.13 | (0.95–1.33) | 0.170 | 13.6 | |||
Peptic ulcer disease | 0.90 | (0.69–1.18) | 0.464 | 2.0 | |||
Peripheral vascular disease | 1.00 | (0.82–1.22) | 0.994 | 0.6 | |||
Pulmonary | 1.44 | (1.24–1.67) | <0.001 | 1.47 | (1.27–1.70) | <0.001 | 99.2 |
Rheumatic disease | 0.92 | (0.70–1.20) | 0.525 | 2.4 |