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. Author manuscript; available in PMC: 2011 Dec 1.
Published in final edited form as: J Am Coll Surg. 2010 Oct 25;211(6):784–790. doi: 10.1016/j.jamcollsurg.2010.08.009

Table 1.

Characteristics of the research cohort

Characteristic # of cases % in the group
Age:
 40–49 10,243 6.3
 50–59 32,400 19.9
 60–69 50,586 31.0
 70–79 50,394 30.9
 80+ 19,383 11.9
Gender:
 Males 102,043 62.6*
 Females 60,939 37.4*
 Missing 24
Race:
 Whites 108,489 84.3*
 Blacks 8,379 6.5*
 Hispanics 6,752 5.2*
 Other 5,135 4.0*
 Missing 34,251
Surgical procedure:
 CABG 87,318 53.6
 Colon resection 46,728 28.6
 Lung resection 28,960 17.8
TOTAL 163,006 100
*

among observations without missing values