Table 2 Univariate analysis independent variables in the general presenting population compared to presentations resulting in frequent readmissions 2008.
Variable group | Variable | General presenting population N = 21956 | Presentations resulting in frequently readmissions N = 227 |
|---|---|---|---|
ICD9 diagnostic code 2 | Dyspnoeas (ICD 78609) | 2.3% | 15.9% p < 0.013 |
| Â | Neurotic disorder (ICD 3079) | 3.4% | 10.6% p < 0.01 |
| Â | Chest pain (ICD 78650) | 4.4% | 9.7% p < 0.01 |
| Â | Chronic obstructive pulmonary disease (ICD 496) | 0.7% | 7% p < 0.01 |
| Â | Congestive heart failure (ICD 4280) | 0.3% | 2.6% p < 0.01 |
| Â | All other ICD codes | 89.0% | 54.2% p < 0.01 |
Triage category | Urgent (Triage 1 & 2) | 5.9% | 15.4% p < 0.01 |
Visit type | Unplanned return visit | 4.3% | 8.8% p < 0.01 |
Season of arrival | Autumn | 24.9% | 30.4% NS |
| Â | Winter | 24.3% | 28.6% NS |
| Â | Spring | 25.0% | 28.6% NS |
| Â | Summer | 25.8% | 12.3% p < 0.01 |
Day of arrival | Weekend | 31.2% | 28.2% NS |
Time of arrival | After hours | 49.0% | 44.9% NS |
Ambulatory Care Sensitive Conditions 4 | ACS rapid onset | 3.9% | 4.8% NS |
| Â | ACS chronic | 1.3% | 7.5% P < 0.01 |
| Â | ACS other | 94.8% | 87.7% P < 0.01 |