Table 1.

Distribution of cases and controls on selected demographic and lifestyle characteristics

Controls, n (%)Cases, n (%)
Age
    20-4973 (14.5)97 (12.4)
    50-59134 (26.6)195 (24.9)
    60-69152 (30.2)291 (37.2)
    70-79144 (28.6)199 (25.4)
Sex
    Male153 (30.4)335 (42.8)
    Female350 (69.6)447 (57.2)
Race
    White470 (93.8)719 (92.1)
    Other31 (6.2)62 (7.9)
Family history of colorectal cancer
    No461 (91.7)647 (82.7)
    Yes42 (8.3)135 (17.3)
Sigmoidoscopy
    Never280 (56.2)357 (46.9)
    In last 2 y86 (17.3)292 (38.4)
    ≥2 y ago132 (26.5)112 (14.7)
BMI (kg/m2)
    Males
        <26.578 (51.0)133 (39.7)
        26.5+75 (49.0)202 (60.3)
    Females
        <25.6174 (50.0)201 (45.1)
        25.6+174 (50.0)245 (54.9)
Vigorous physical activity (h/mo)
    Males
        063 (41.2)164 (49.0)
        Low46 (30.1)101 (30.1)
        High44 (28.8)70 (20.9)
    Females
        0139 (39.7)221 (49.4)
        Low99 (28.3)117 (26.2)
        High112 (32.0)109 (24.4)
Menopausal status
    Post295 (84.8)388 (87.2)
    Pre53 (15.2)57 (12.8)
Postmenopausal hormone use
    Never116 (39.3)179 (46.6)
    Former33 (11.2)42 (10.9)
    Current146 (49.5)163 (42.4)
Regular NSAID use
    Never236 (47.2)387 (50.0)
    Former108 (21.6)163 (21.1)
    Current156 (31.2)224 (28.9)
Smoking status
    Never247 (49.2)306 (39.1)
    Former208 (41.4)381 (48.7)
    Current47 (9.4)95 (12.1)
Multivitamins
    Never131 (26.2)230 (29.7)
    Former264 (52.8)351 (45.3)
    Current105 (21.0)194 (25.0)
Calcium
    Never262 (52.6)490 (62.9)
    Former163 (32.7)184 (23.6)
    Current73 (14.7)105 (13.5)