Table 2.
Results from logistic regression models investigating the association transport to the ED by EMS with primary model predictors (age, sex, prior MI, prior cardiac intervention, and time of week), secondary model (removing prior myocardial infarction) and an unplanned model (including White race and patients with private insurance in place of prior MI and prior cardiac intervention).
| Covariate | Primary Model | Secondary Model | Post-Hoc Model | |||
|---|---|---|---|---|---|---|
| OR | 95% CI | OR | 95% CI | OR | 95% CI | |
| Age (per year) | 1.01 | (0.99-1.04) | 1.01 | (0.99-1.04) | 1.01 | (0.98-1.04) |
| Female | 0.53 | (0.24-1.17) | 0.48 | (0.22-1.06) | 0.4 | (0.16-0.99) |
| Prior myocardial infarction |
1.95 | (0.82-4.64) | ||||
| Prior cardiac intervention |
0.82 | (0.36-1.86) | 1.18 | (0.62-2.25) | ||
| Weekend/evening | 1.68 | (0.83-3.37) | 1.61 | (0.81-3.2) | 1.81 | (0.81-4.01) |
| White race | 1.16 | (0.42-3.24) | ||||
| Private insurance | 0.18 | (0.07-0.45) | ||||
Scherer © 2012 Prehospital and Disaster Medicine
Abbreviation: MI, myocardial infarction