Table 1.

Characteristics of Participant Family Medicine Offices

Characteristic	Office A	Office B	Office C	Office D
Location	Rural	Suburban	Urban	Suburban
Clinicians, n
Full-time	4	1	2	7
Resident	12	0	0	0
Part-Time	0	3	2	6
Total	16	4	4	13
Women clinicians, n	8	2	3	7
African-American clinicians, n	1	0	1	0
Staff, n
Full-time	16	1	9	23
Part-time	4	0	0	2
Total	20	1a	9	25
Patient-payer mix, %
Ensured	35	47	24	50
Medicare	30	47	41	45
Medicaid	25	1	17	0
Self-pay	10	1	18	5
Residency practice	Yes	No	No	No
Electronic health record	No	Yes	No	No
Outside laboratories used, n	2	2	1	2

^a Contracts with outside phlebotomy, receptionist, and health system billing.