Rate ratios for potential determinants of number of readmissions and cumulative duration of acute care stay(s) within 1 year of index acute care discharge
| Potential determinant | Outcome; RR (95% CI) | |
|---|---|---|
| No. of readmissions | Cumulative duration of stay(s) | |
| Age at admission, yr | ||
| 20–34 | 0.93 (0.57–1.51) | 0.64 (0.25–1.67) |
| 35–49 | 0.57 (0.38–0.85) | 0.51 (0.23–1.09) |
| 50–64 | 0.72 (0.52–1.00) | 0.71 (0.37–1.39) |
| 65–79 | 1.00 | 1.00 |
| ≥ 80 | 0.58 (0.34–0.97) | 0.70 (0.27–1.80) |
| Sex | ||
| Female | 1.06 (0.80–1.40) | 1.03 (0.57–1.86) |
| Male | 1.00 | 1.00 |
| Johns Hopkins ACG Resource Utilization Bands category | NR | |
| None or healthy | 0.15 (0.05–0.49) | |
| Low | 0.85 (0.24–3.02) | |
| Moderate | 0.68 (0.36–1.28) | |
| High | 0.71 (0.37–1.40) | |
| Very high | 1.00 | |
| Comorbidity index | NR | |
| < 10 | 1.00 | |
| 10–30 | 1.19 (0.85–1.65) | |
| > 30 | 1.60 (1.11–2.31) | |
| Index length of stay, d | NR | |
| < 10 | 1.67 (0.78–3.59) | |
| 10–30 | 2.88 (1.28–6.52) | |
| 31–90 | 4.17 (1.38–12.64) | |
| > 90 | 1.00 | |
| No. of special care hours | NR | |
| 0 | 0.88 (0.58–1.33) | |
| 1–499 | 1.00 | |
| 500–999 | 1.22 (0.85–1.77) | |
| ≥ 1000 | 1.47 (0.98–2.19) | |
| Psychological/behavioural diagnosis | NR | |
| Absent | 1.00 | |
| Present | 0.73 (0.52–1.01) | |
| Discharge disposition | ||
| Home | 1.41 (0.97–2.06) | 0.44 (0.21–0.91) |
| Rehabilitation | 1.43 (0.97–2.09) | 1.25 (0.60–2.63) |
| Continuing/long-term care | 1.00 | 1.00 |
| Other | 1.09 (0.74–1.60) | 1.73 (0.74–4.06) |
Note: ACG = Adjusted Clinical Groups, ADG = Aggregated Diagnosis Groups, CI = confidence interval, NR = not retained in the model, RR = rate ratio.