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) |