Table 1.

Selected characteristics of colorectal cancer cases and controls, Singapore Chinese Health Study

CharacteristicsControlsCasesP
Total no.873 (100)*290 (100)*
Sex
    Female492 (56.4)122 (42.0)<0.01
    Male381 (43.6)168 (58.0)
Body mass index (kg/m2)
    ≤20144 (16.4)*44 (15.2)*0.04
    20 to <24485 (55.6)*143 (49.3)*
    24 to <28200 (23.0)*83 (28.6)*
    >2844 (5.0)*20 (6.9)*
Height160 (147,170)160 (147,175)0.01
Moderate physical activity (h/wk)
    0653 (74.8)217 (74.8)0.69
    0.5-3139 (15.9)42 (14.5)
    >481 (9.3)31 (10.7)
Education level
    High school604 (69.2)*193 (66.6)*<0.01
    None (formal)207 (23.7)*87 (30)*
    Post-high school41 (4.7)*6 (2.0)*
    University21 (2.4)*4 (1.4)*
Total calcium intake (mg/d)388.7 (160.1, 865.0)364.8 (149.3, 781.8)0.20
Total calories (kcal/d)1,494.5 (835.6, 2,480.2)1,497.4 (814.4, 2,583.0)0.91
Total fiber intake (g/d)12.3 (5.3, 23.7)11.9 (4.2, 22.7)0.54
Total fat (g/d)41.4 (19.7, 82.3)39.5 (18.3, 77.2)0.20
  • * Number of subjects (%).

  • Median (5th, 95th percentile).