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. Author manuscript; available in PMC: 2015 Jul 1.
Published in final edited form as: J Clin Epidemiol. 2014 Apr 18;67(7):781–784. doi: 10.1016/j.jclinepi.2014.02.005

Table 1.

Background Characteristics of the Sample (N=1015)

Variable Mean ± SD or n (%)
Age* 43.76 ± 11.09
Gender**
 Female 571 (56.26)
 Male 444 (43.74)
Race
 White 617 (60.79)
 Black/African American 266 (26.21)
 Other 111 (10.94)
 missing 21 (2.07)

Age* (N=991)

Gender (N=998)