Table 1.

Selected characteristics of African American participants at baseline by case status, SCCS, 2002–2009

Baseline characteristics, N (%)Controls (N = 440)Cases (N = 224)
Age, years, median (IQR)55 (13)55 (13)
Male sex203 (46.1)100 (44.6)
Education
 <High school163 (37.1)104 (46.4)
 High school147 (33.4)68 (30.4)
 >High school120 (27.3)47 (21.0)
Household income, $
 <15,000275 (62.5)148 (66.1)
 15,000–49,999136 (30.9)67 (29.9)
 ≥50,00016 (3.6)2 (0.9)
Colorectal cancer screening, ever121 (27.5)55 (24.6)
Family history of colorectal cancer22 (5.0)12 (5.4)
BMI, kg/m2, median (IQR)28.3 (9.9)29.4 (10.0)
Current smoker184 (41.8)75 (33.5)
Non- and moderate alcohol consumers337 (76.6)175 (78.1)
Physical activity, MET-h/d, median (IQR)16.3 (22.7)15.9 (21.0)
Sedentary time, hours, median (IQR)8.0 (6.2)8.0 (6.3)
Total energy, kcal, median (IQR)2,212 (1748)2,261 (1826)
 Meat, servings/day, median (IQR)2 (2)2 (1)
 Fruits and vegetable, servings/day, median (IQR)3 (2)3 (2)
 Folate, micrograms/day, median (IQR)432 (373)471 (388)
Vitamin D supplement use0 (0)0 (0)
 25-hydroxyvitamin D, ng/mL, median (IQR)13.0 (10.2)12.5 (10.7)
 Vitamin D–binding protein, μg/mL, median (IQR)300.6 (56.9)301.4 (62.2)
  • NOTE: Subjects with data missing for the characteristic of interest are not included in this analysis.

  • Abbreviation: IQR, interquartile range.