Table 1.
Characteristics of Participating Practices
Characteristic | Total No. | Interventin No. | Control No. | PValue |
Recruited, No. | 87 | 43 | 44 | |
Location, No. | .69* | |||
Southeast Michigan | 16 | 9 | 7 | |
Mid-Michigan | 23 | 10 | 13 | |
Southwest Michigan | 17 | 10 | 7 | |
Northern Michigan | 31 | 14 | 17 | |
Size of community, No. | .83* | |||
<5,000 | 10 | 6 | 4 | |
5,000–10,000 | 7 | 3 | 4 | |
10,000–25,000 | 26 | 12 | 14 | |
25,000–100,000 | 23 | 10 | 13 | |
>100,000 | 21 | 12 | 9 | |
Proximity to major city, No. | .76* | |||
Not within 25 miles | 29 | 15 | 14 | |
Within 25 miles | 58 | 28 | 30 | |
Practice type, No. | .72* | |||
Solo | 13 | 6 | 7 | |
2-person | 16 | 6 | 10 | |
Group practice | 37 | 20 | 17 | |
Multispecialty group practice | 21 | 11 | 10 | |
Patients aged >65 years, mean % (SD) | 24.7 (17.8) | 21.0 (15.4) | .34† | |
Patients white, non-Hispanic, mean % (SD) | 78.0 (23.6) | 82.2 (19.0) | .38† | |
Patients uninsured / Medicaid, mean % (SD) | 19.5 (18.4) | 23.3 (20.2) | .40† | |
Estimated smoker visits per quarter, total No. | 22,163 | 23,537 |
* χ2 test.
† t test.