Multivariate Logistic Regression Model Predicting Common Chest Symptom-Related* Visits Associated with a Computed Tomography Order in United States Emergency Departments, 1997 to 1999 and 2005 to 2007
| Characteristic | Odds Ratio† (95% CI) of a Computed Tomography Order |
|---|---|
| Time period | |
| 1997–1999 | 1.00 (–) |
| 2005–2007 | 6.41 (5.12 – 8.03) |
| Sex | |
| Female | 1.00 (–) |
| Male | 0.92 (0.80 – 1.07) |
| Age (years) | |
| 15–44 | 1.00 (–) |
| 45–64 | 1.09 (0.92 – 1.29) |
| >65 | 1.30 (1.04 – 1.61) |
| Race | |
| White | 1.00 (–) |
| Black | 0.92 (0.77 – 1.11) |
| Other | 0.73 (0.50 – 1.07) |
| Health insurance | |
| Private | 1.00 (–) |
| Medicare | 0.88 (0.70 – 1.10) |
| Medicaid | 0.71 (0.57 – 0.88) |
| Self-pay/other | 0.96 (0.77 – 1.19) |
| Geographic region | |
| Northeast | 1.00 (–) |
| Midwest | 1.24 (0.90 – 1.70) |
| South | 0.99 (0.74 – 1.31) |
| West | 1.51 (1.15 – 1.99) |
↵* Common chest symptoms are chest pain, shortness of breath, or labored breathing.
† Adjusted for all other variables in the table.