Table 1 Personal, professional and practice characteristics of IMG and USMG family physicians

Age (n = 2591)

<35

299 (13)

13 (3)

<0.001

35–44

949 (43)

106 (33)

45–54

588 (26)

117 (33)

55–64

251 (12)

63 (18)

>65

163 (7)

42 (13)

Years in practice (n = 2726)

Under 6

449 (19)

81 (23)

<0.001

6–10

504 (22)

51 (12)

11–20

830 (35)

121 (34)

21–30

279 (12)

56 (15)

31–40

234 (10)

43 (12)

41+

64 (3)

14 (4)

Location (n = 2726)

Large metro >200 K

1955 (70)

322 (76)

0.0454

Small metro <200 K

45 (5)

7 (6)

Non-metro area

360 (25)

37 (18)

Ownership status (n = 2726)

Full owner

733 (32)

150 (43)

<0.001

Part owner

472 (21)

52 (14)

Not an owner

1155 (48)

164 (43)

Practice type (n = 2726)

Solo or 2 physicians

829 (37)

169 (47)

0.0072

Group ≥ 3 physicians

585 (24)

76 (21)

Health maintenance organization

154 (5)

27 (5)

Medical school

89 (4)

11 (4)

Hospital-based

388 (17)

46 (13)

Other

315 (13)

37 (9)

Board certification status (n = 2707)

Board Certified

2055 (87)

243 (67)

<0.001

Board Eligible Only****

169 (7)

61 (18)

Neither

123 (6)

56 (15)

Accepting new Medicare patients (n = 2726)

None

222 (9)

27 (9)

0.0451

Some

418 (17)

43 (12)

Most

339 (14)

51 (12)

All

1381 (60)

245 (67)

Accepting new Medicaid patients (n = 2726)

None

647 (25)

94 (24)

0.0018

Some

591 (25)

67 (18)

Most

231 (10)

35 (9)

All

891 (40)

170 (49)

Percentage of revenue from Medicare (n = 2726)

Mean (SE) 27.54 (0.48)

Mean (SE) 30.62 (1.46)

0.0310***

Percentage of revenue from Medicaid (n = 2726)

Mean (SE) 13.90 (0.48)

Mean (SE) 17.82 (1.31)

0.0020***

Percentage of patients for whom physician serves as gatekeeper (n = 2726)

Mean (SE) 36.72 (0.94)

Mean (SE) 43.67 (2.34)

0.0018***