Table 2

Number of cases and controls by sociodemographic characteristics and cumulative exposure-days

CasesControlsTotal
Subject characteristics:
    Education (y):
        ≥12174764
        8–1194150
        <821214
        Unknown235
    Marital status:
        Married187997
        Widowed, divorced, separated82230
        Never married123
        Unknown303
    Smoking (cigarettes):
        Never smoked01212
        Smoked for 6 months or more196685
        Unknown112536
    Drinking (alcohol):
        Not regular drinker94352
        Regular drinker93443
        Unknown122638
    Income ($):
        ≥2000082735
        <2000073037
        Unknown154661
Cumulative exposure days (concentration×days of exposure):
    Respirable fibres (fibres/ml):
        <10052025
        100–299.99122032
        ≥300 (max=687.7)136174
        Unknown022
    Asbestos (fibres/ml):
        0165672
        0.03–0.9941418
        ≥1 (max=66.7)103141
        Unknown022
    Talc (fibres/ml):
        0195675
        >0 (max=66.7)114556
        Unknown022
    Respirable silica (mg/m3):
        031518
        0.03–0.999156
        1 to 9.951722
        10–99.9122941
        ≥100 (max=6664.8)93544
        Unknown022
    Formaldehyde (ppm):
        <1000134659
        ≥1000 (max=7514.5)175572
        Unknown022