Table 1.

Characteristics of PRINS Clinicians and NAMCS Physicians

Percentage of Clinicians, Weighted
CharacteristicPRINSNAMCS Mean (95% CI)
PRINS = Primary Care Network Survey; NAMCS = National Ambulatory Medical Care Survey; CI = confidence interval; MSA = Metropolitan Statistical Area; APN = advanced practice nurse; NP = nurse-practitioner; NA = not available or not applicable.
* Response choices as listed on the PRINS form. The NAMCS response choice “medical/academic health center” is included in “hospital.”
† PRINS includes 2 categories (owner, employee/contractor); NAMCS includes 3 categories (owner, employee, contractor).
Specialty
Family medicine/general practice34.243.2 (40.8–45.6)
Internal medicine8.736.7 (34.7–38.7)
Pediatrics52.920.1 (18.5–21.7)
Other4.20.0 (–)
Region
Northeast20.422.8 (20.8–24.8)
Midwest25.623.4 (21.0–25.8)
South28.729.7 (26.5–32.9)
West25.324.2 (21.6–26.8)
MSA status
MSA77.579.1 (77.3–80.9)
Non-MSA19.720.9 (17.1–24.7)
Missing2.80.0 (–)
Discipline
Physician89.0100.0 (NA)
Resident3.90.0
APN/NP5.40.0
Physician’s assistant1.70.0
Missing0.00.0
Sex
Male53.076.8 (NA)
Female47.023.2
Age
<50 years70.066.5 (63.7–69.3)
≥50 years28.433.5 (30.7–36.3)
Missing1.60.0 (–)
Ethnicity
Non-Hispanic94.0NA
Hispanic5.3
Missing0.7
Race
White85.3NA
Black/African American3.3
Asian10.0
Native Hawaiian/other Pacific Islander0.4
American Indian/Alaska Native0.1
More than 1 race0.3
Missing0.6
Who owns this practice?*
Hospital24.98.6 (6.8–10.4)
Physician or physician group54.675.9 (73.1–78.7)
Other health care corporation15.28.3 (6.5–10.1)
Health maintenance organization0.13.2 (2.2–4.2)
Other3.94.0 (2.8–5.2)
Missing1.30.0 (–)
Employment status
Owner37.663.8 (60.6–67.0)
Employee (or contractor–PRINS)61.130.8 (27.6–34.0)
Contractor (NAMCS)5.4 (4.2–6.6)
Missing1.30.0 (–)