Table 1.

Characteristics of Participant Family Medicine Offices

CharacteristicOffice AOffice BOffice COffice D
a Contracts with outside phlebotomy, receptionist, and health system billing.
LocationRuralSuburbanUrbanSuburban
Clinicians, n
    Full-time4127
    Resident12000
    Part-Time0326
    Total164413
Women clinicians, n8237
African-American clinicians, n1010
Staff, n
    Full-time161923
    Part-time4002
    Total201a925
Patient-payer mix, %
    Ensured35472450
    Medicare30474145
    Medicaid251170
    Self-pay101185
Residency practiceYesNoNoNo
Electronic health recordNoYesNoNo
Outside laboratories used, n2212