Characteristics of Study Physicians and Diabetes Patients Linked to Those Study Physicians at Intervention and Control Clinics
| Variable | Intervention Clinic | Control Clinic | P Valuea |
|---|---|---|---|
| a P value derived from independent samples t test or Pearson χ2. | |||
| Patients | |||
| Total No. | 1,194 | 1,362 | |
| Mean age (SD), y | 57.0 (10.7) | 57.5 (10.1) | .23 |
| Female, % | 46.7 | 54.5 | <.001 |
| White race, % | 82.8 | 70.6 | <.001 |
| Coronary heart disease preintervention, % | 12.1 | 12.6 | .75 |
| Congestive heart failure preintervention, % | 2.9 | 3.6 | .35 |
| Preintervention first glycated A1c, mean (SD) [median], % | 7.4 (1.68) [7.0] | 7.4 (1.67) [7.0] | .47 |
| Preintervention first systolic blood pressure, mean (SD) [median], mm Hg | 127.3 (17.4) [126] | 126.8 (17.1) [125] | .40 |
| Preintervention first diastolic blood pressure, mean (SD) [median], mm Hg | 74.5 (10.9) [74] | 73.5 (10.5) [74] | .023 |
| Preintervention first LDL cholesterol value, mean (SD) [median], mg/dL | 99.4 (34.5) [94] | 95.9 (33.8) [90] | .019 |
| Primary care physicians | |||
| Total No. | 20 | 20 | |
| Age, mean (SD), y | 49.2 (9.9) | 50.2 (7.3) | .71 |
| Family physician,% | 80.0 | 45.0 | .02 |
| Female physician, % | 55.0 | 50.0 | .75 |
| Diabetes patients per physician, mean (SD), No. | 43.7 (17.3) | 55.8 (30.2) | .13 |