Table 1.
Number of emergency department (ED) visits, ambulatory care visits, and percentage with half or more of ambulatory visits to the ED, by insurance type and usual source of care (USC) (2000, 2011), unadjusted.
| Year | Insurance type | Mean # of ED visits | Mean # of ambulatory visits | % of ambulatory care visits to the ED | % with half or more of ambulatory visits to the ED | ||||
|---|---|---|---|---|---|---|---|---|---|
| USC | No USC | USC | No USC | USC | No USC | USC | No USC | ||
| 2000 | Private | 0.22 | 0.37* | 7.60 | 3.92* | 5.8% | 14.0%* | 4.7% | 12.8%* |
| Medicaid | 0.56 | 0.19* | 9.53 | 7.00 | 10.9% | 8.9% | 9.5% | 8.5% | |
| Uninsured | 0.37 | 0.47 | 5.50 | 4.40* | 12.4% | 23.8%* | 12.3% | 25.5%* | |
|
| |||||||||
| 2011 | Private | 0.28 | 0.30 | 6.99 | 4.39* | 5.8% | 8.6%* | 5.0% | 7.8%* |
| Medicaid | 0.61 | 0.65 | 10.01 | 5.04* | 10.3% | 21.8%* | 8.1% | 21.6%* | |
| Uninsured | 0.43 | 0.51 | 6.15 | 3.75* | 10.0% | 23.4%* | 8.8% | 24.1%* | |
*P < 0.05 for difference between USC and no USC.