Table 1.

Characteristics of Nonfederal Office-Based Physicians: United States, 2012

Physician characteristics	All physicians, % (95% KG CI) (n = 5622)
Sex
Male	72.3 (70.58–74.02)
Female	27.7 (25.98–29.42)
Age
<45 years	24.5 (22.90–26.21)
45–54 Years	30.1 (28.41–31.87)
55–64 Years	31.0 (29.27–32.80)
≥65 Years	14.3 (13.03–15.73)
Racea
White	78.6 (76.80–80.24)
Asian	15.5 (13.98–17.18)
Other	5.9 (5.07–6.84)
Medical specialty
General and family practice	17.1 (15.86–18.49)
Internal medicine	12.8 (11.40–14.31)
Pediatrics	10.3 (9.21–11.46)
Psychiatry	5.9 (5.10–6.81)
OB/GYN	7.2 (6.24–8.33)
Other	46.6 (45.31–47.93)
Type of physician
MD	94.1 (93.16–94.86)
DO	6.0 (5.15–6.84)
Location of medical school
United States	75.2 (73.50–76.92)
Foreign	24.8 (23.08–26.50)
MSA status
MSA	92.7 (91.91–93.35)
Non-MSA	7.3 (6.65–8.09)
U.S. Census region
Northeast	21.5 (20.46–22.63)
Midwest	18.9 (17.87–19.93)
South	35.2 (33.92–36.43)
West	24.4 (23.30–25.57)

Data source: National Ambulatory Medical Care Survey Physician Induction Interview, 2012.

^aThe number of physicians responding to this item was 5,403, as not all physicians provided a response to this survey question.

CI, confidence interval; DO, doctor of osteopathic medicine; KG, Korn–Graubard; MD, doctor of medicine; MSA, metropolitan statistical area;
n, unweighted sample size;
NA, not applicable;
OB/GYN, obstetrics and gynecology.