Table 1.
Association between emergency department characteristics and access to immediate bedside ultrasound
| Total | Access to Ultrasound | |||
|---|---|---|---|---|
| N | n | (%) | P value | |
| TOTAL | 298 | 175 | 59% | -- |
| State | 0.001 | |||
| Colorado | 63 | 42 | 67% | |
| Georgia | 120 | 53 | 44% | |
| Massachusetts | 63 | 44 | 70% | |
| Oregon | 52 | 36 | 69% | |
| Urban/Rural status | <0.001 | |||
| Urban | 182 | 130 | 71% | |
| Rural, adjacent to urban | 66 | 20 | 30% | |
| Rural, not adjacent to urban | 50 | 25 | 50% | |
| ED visit volume (patients/hour) | <0.001 | |||
| <1 | 59 | 20 | 34% | |
| 1.0–1.9 | 67 | 27 | 40% | |
| 2.0–2.9 | 31 | 17 | 55% | |
| ≥3 | 141 | 111 | 79% | |
| Admission rate | <0.001 | |||
| 0–10% | 69 | 27 | 39% | |
| 11–20% | 164 | 99 | 60% | |
| >20% | 51 | 43 | 84% | |
| Uninsured | 0.47 | |||
| 0–15% | 91 | 56 | 62% | |
| 16–30% | 118 | 73 | 62% | |
| >30% | 64 | 34 | 53% | |
| Number of physician FTEs | <0.001 | |||
| 0–4 | 75 | 25 | 34% | |
| 5–9 | 104 | 54 | 52% | |
| ≥10 | 105 | 86 | 82% | |
| EM BC/BE physicians | <0.001 | |||
| 0–20% | 72 | 19 | 26% | |
| 21–79% | 59 | 33 | 56% | |
| ≥80% | 159 | 117 | 74% | |
ED, emergency department; FTE, full-time equivalents; EM, emergency medicine; BC, board certified; BE, board eligible