TABLE 2.
Odds of Super- or Under-Use by Practice Characteristicsa
| Super-User |
Under-User |
|||
|---|---|---|---|---|
| OR | 95% CI | OR | 95% CI | |
| Practice Size (number of associated physicians) | ||||
| <7 | Reference | |||
| 7–19 | 1.61 | (1.49–1.75) | 0.77 | (0.71–0.83) |
| 20–99 | 2.06 | (1.82–2.32) | 0.66 | (0.58–0.75) |
| ≥100 | 3.24 | (2.95–3.55) | 0.78 | (0.71–0.85) |
| Practice Type | ||||
| Primary/family | Reference | |||
| Single or multiple specialty, allied health | 0.89 | (0.83–0.94) | 1.08 | (1.03–1.14) |
| Specialist services and urgent care | 0.64 | (0.57–0.72) | 1.40 | (1.27–1.55) |
| Location | ||||
| Rural | Reference | |||
| Small town | 1.02 | (0.84–1.22) | 0.99 | (0.86–1.13) |
| Midsize | 0.99 | (0.83–1.18) | 0.95 | (0.84–1.08) |
| Metropolitan | 2.45 | (2.10–2.85) | 0.61 | (0.54–0.68) |
| Region | ||||
| Northeast | Reference | |||
| Midwest | 2.05 | (1.90–2.22) | 0.59 | (0.56–0.64) |
| South | 1.32 | (1.22–1.42) | 0.98 | (0.92–1.04) |
| West | 0.93 | (0.85–1.03) | 1.16 | (1.07–1.26) |
OR indicates odds ratio.
a
Analysis excludes 115 practices without accurate zip code information.