TABLE 2.

Baseline Practice Characteristics

Practice	A	B	C	D	E
Organizational Structure	Private Practice within Large, Loosely Affiliated Multispecialty Group	Private Practice within Large, Loosely Affiliated Multispecialty Group	Private Practice within Small, More Closely Affiliated Multispecialty Group	Practice within a Highly Integrated Multispecialty Six-Group Practice Alliance (Including Practice E)	Practice within a Highly Integrated Multispecialty Six-Group Practice Alliance (Including Practice D)
Number of physicians in group	180	180	71	625	46
Number of physicians in practice	9	3	6	15	9
Number of nurse practitioners/physician assistants	3	4	3	7	4
Practice site location(s)	1	1	1	1	1
Relationship of PCMH initiative to local payer	Yes	Yes	Yes	No	No
Level of local health information exchange	Low	Low	Medium	High	High
Electronic health record use	Yes	Yes	Yes	Yes	Yes
Electronic prescribing	Yes	Yes	Yes	Yes	Yes
Registry function	Partial	Partial	Full	Full	Full
Region	Suburban area in large northeast state	Suburban area in large northeast state	Suburban area in large northeast state	Suburban area in small northeast state	Suburban area in small northeast state
Local town population	20,463	8,188	38,866	56,203	14,893
Median age (area)	37.5	38.8	36.7	37.4	37.3
Per capita income (1999$)	24,352	25,271	29,611	24,624	23,216