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Table 1 Description of Participating Medical Groups (N = 41)

From: Recruiting medical groups for research: relationships, reputation, requirements, rewards, reciprocity, resolution, and respect

Characteristic N %
Number of physicians:   
   <10 1 2
   10–39 10 24
   40–99 13 32
   100–199 8 20
   200–2000 9 22
Number of practice sites:   
   1 2 5
   2–5 17 41
   6–15 11 27
   >15 11 27
Type of practice:   
   Primary care 15 36
   Multi-specialty 26 63
Ownership:   
   Health plan 3 7
   Hospital 12 29
   Physicians 19 46
   Other 7 17
Patient visits/week/group 4800 800–50,000
Commercial insurance 61% 28–87%
Medicare 20% 5–40%
Medical Assistance 9% 0–54%
No insurance 3% 0–16%