Patient (N = 927) and Practice (N = 50) Characteristics
| Characteristic | EMR Practices | Non-EMR Practices | Test Statistic | P Value* |
|---|---|---|---|---|
| EMR = electronic medical record. | ||||
| * Bonferroni adjusted significance level P ≤.007. | ||||
| † Hierarchical model, Wald test statistic. | ||||
| ‡ Analysis of variance, degrees of freedom = 1, 48. | ||||
| § Fisher exact test. | ||||
| No. of patients | 257 | 670 | ||
| Mean age, y (SD) | 57.3 (15.1) | 60.7 (14.4) | 9.86† | .002 |
| Sex, % | 2.04† | .15 | ||
| Women | 53.9 | 48.7 | ||
| Men | 46.1 | 51.3 | ||
| No. of practices | 13 | 37 | ||
| No. of clinicians, mean (SD) | 4.5 (3.2) | 4.7 (3.2) | 0.02‡ | .89 |
| No. of staff, mean (SD) | 10.2 (8.7) | 14.9 (10.9) | 1.92‡ | .17 |
| Staff/clinician ratio (SD) | 2.3 (1.6) | 3.2 (1.6) | 3.35‡ | .07 |
| Practice type, % (n) | - | .66§ | ||
| Solo practice | 7.7 (1) | 18.9 (7) | ||
| Group practice | 92.3 (12) | 81.1 (30) | ||
| Practice ownership, % (n) | - | .32§ | ||
| Physician | 53.8 (7) | 70.3 (26) | ||
| Health system/other | 46.2 (6) | 29.7 (11) | ||