Table 1.

Baseline characteristics of the CLUE II cohort and subcohort

Full cohort (n = 22,287)Subcohort (n = 2,224)P
Age at blood draw (mean ± SD), y48.4 ± 16.348.5 ± 16.30.90
Female, %58.558.10.72
Caucasian, %98.398.30.83
Education, %
    Less than 12 y20.421.3
    High school graduate45.345.6
    Beyond high school34.333.10.42
Smoking status, %
    Never50.048.3
    Former cigarette smoker28.129.0
    Current cigarette smoker19.720.5
    Ever cigar or pipe smoker but never cigarette smoker2.12.20.49
Cholesterol level (mean ± SD), mg/dl205.6 ± 40.6206.2 ± 39.50.50
Body mass index (mean ± SD), kg/m226.2 ± 4.926.2 ± 5.00.54