Table 3.
Multivariable Logistic Regression Analyses Predicting New BADL Disability at Hospital Discharge
| Variables | Full model | P value | Most parsimonious model* | P value | Bootstrap estimation |
|---|---|---|---|---|---|
| OR (95% CI) | OR (95% CI) | 95% CI | |||
| Age | |||||
| 65–74 | 1 (Reference) | – | 1 (Reference) | – | |
| 75–84 | 1.76 (1.01–3.07) | 0.046 | 1.94 (1.12–3.34) | 0.017 | (1.06–3.36) |
| ≥84 | 2.24 (1.21–4.16) | 0.010 | 2.75 (1.52–4.97) | 0.001 | (1.44–4.76) |
| Nursing home resident | 4.50 (1.68–12.1) | 0.003 | 4.75 (1.80–12.6) | 0.002 | (1.15–13.3) |
| BMI | |||||
| <18.5 | 2.32 (0.93–5.78) | 0.070 | 3.41 (1.49–7.81) | 0.004 | (1.04–7.27) |
| 18.5–24.9 | 1 (Reference) | 1 (Reference) | |||
| 25–29.9 | 0.63 (0.34–1.18) | 0.152 | |||
| ≥30 | 0.77 (0.34–1.75) | 0.537 | |||
| Missing | 4.11 (2.28–7.40) | <0.001 | 5.50 (3.36–8.99) | <0.001 | (3.04–8.27) |
| Albumin | |||||
| <3.5 g/dL | 1.39 (0.80–2.43) | 0.245 | |||
| Total cholesterol (mg/dL) | |||||
| <160 | 1 (Reference) | ||||
| 160–199 | 1.05 (0.55–2.00) | 0.882 | |||
| 200–239 | 0.70 (0.32–1.54) | 0.374 | |||
| ≥240 | 0.95 (0.38–2.42) | 0.920 | |||
| Erythrocyte sedimentation rate | |||||
| ≥40 mm/h | 1.60 (0.98–2.62) | 0.062 | 1.75 (1.11–2.75) | 0.016 | (1.02–2.73) |
| Pneumonia | 1.65 (0.63–4.32) | 0.304 | |||
| Stroke | 6.72 (2.87–15.8) | <0.001 | 6.32 (2.75–14.5) | <0.001 | (2.21–14.9) |
| Antipsychotic | 1.92 (0.85–4.33) | 0.117 | |||
| Number of medications | |||||
| 0–4 | 1 (Reference) | 1 (Reference) | |||
| 5–7 | 1.32 (0.62–2.83) | 0.476 | |||
| ≥8 | 2.06 (1.03–4.13) | 0.041 | 1.95 (1.24–3.06) | 0.004 | (1.18–2.86) |
| Total CIRS score | |||||
| 0–6 | 1 (Reference) | 1 (Reference) | |||
| 7–9 | 2.00 (1.13–3.50) | 0.018 | 2.06(1.17–3.60) | 0.012 | (1.21–3.52) |
| ≥10 | 2.12 (1.16–3.91) | 0.014 | 2.17(1.21–3.89) | 0.010 | (1.28–3.80) |
| Cognitive decline (HAMT <7) | 1.75 (1.08–2.83) | 0.023 | 2.01 (1.28–3.15) | 0.012 | (1.11–2.82) |
| History of fall | 1.75 (1.01–3.04) | 0.046 | 1.73 (1.01–2.94) | 0.045 | (0.91–2.91) |
| Number of independent IADL | |||||
| 7 | 1 (Reference) | ||||
| 6–3 | 0.92 (0.54–1.58 | 0.758 | |||
| 0–2 | 1.39 (0.80–2.46) | 0.252 |
For variables removed from the initial model, OR and 95% CI are not displayed in table. Variables included in the initial model are all the same variables included in the full model.
OR = odds ratio, CI = Confidence interval, CIRS = Cumulative Illness Rating Scale, HAMT = Hodkinson Abbreviated Mental Test
*Backward stepwise logistic regression model (Pvalue for removal >0.1).