Table 2.

Characteristics of 6639 Graduates Taking the ABIM Certifying Examination for the First Time in 2007^a

Characteristic	Quintile of Intensity, %
	1 (Lowest)	2	3	4	5 (Highest)
No. of residents	1267	1322	1159	1377	1514
Male sex	57	57	57	54	57
Age, y
25–29	20	22	23	23	21
30–34	57	57	58	55	55
35–39	15	14	12	15	16
40–44	6	4	4	5	5
45–49	1	2	2	1	1
≥50	1	0	1	1	1
Born in the United States or Canadab	60	56	53	36	39
International medical graduateb	32	32	36	54	47
Residency completion year relative to examination year
Same	85	84	87	88	92
1 y Before	12	13	10	10	7
2–4 y Before	3	3	3	2	1
Subsequent subspecialty training (any)	50	55	55	56	56

Abbreviations: ABIM, American Board of Internal Medicine; EOL-VI, End-of-Life Visit Index.

^aStratified according to the quintile of the primary exposure, utilization intensity (EOL-VI) in the hospital referral region of their residency program’s primary hospital. EOL-VI included inpatient and outpatient visits.

^bDenominator is all individuals taking the examination; country of birthplace and medical school graduation were missing for 5% and 4% of the residents, respectively. International medical graduate signifies graduation outside the US and Canada.