Table 1.

Characteristics of the study population in the Me-Can project

Breast cancer incidenceBreast cancer mortality
No. of casesPerson-yearsNo. of casesPerson-years
Cohort
    Norway
        NCS932653,973257658,099
        CONOR573352,27832302,828
        40-y794502,53150441,452
    Austria
        VHM&PP1,239837,945177855,768
    Sweden
        VIP709345,41849278,578
        MPP615200,32068194,342
Year of birth
    -191914952,3494454,486
    1920-1929681302,846159305,690
    1930-19391,499715,936209704,342
    1940-19491,077482,972135458,495
    1950-19591,329934,83579835,668
    1960-127403,5287372,386
Age at measurement (y)
    -29148357,59414349,101
    30-39730613,89297586,549
    40-492,1651,254,5463031,162,839
    50-591,106406,757106382,415
    60-69499180,35263171,941
    ≥7021479,3245078,222
Attained age (y)
    <501,4661,486,6021111,408,584
    50-591,302644,415183597,668
    ≥602,094761,448339724,817
Smoking status
    Never smoker2,5001,464,0753391,401,562
    Ex-smoker1,186653,749110593,354
    Smoker1,162766,426181728,899
    Missing148,21537,253
BMI (kg/m2)
    <18.58174,0831072,245
    18.5-24.92,7011,697,8023391,606,994
    25.0-29.91,483800,883201751,817
    ≥30597319,69783300,011
Fasting time (h)
    ≤82,3941,511,2693501,404,782
    >82,4681,381,1962831,326,286
Follow-up (y)
    0-93,3722,188,3643222,053,309
    10-19987505,895211493,763
    ≥20503198,206100183,996
Total4,8622,892,4656332,731,068

Abbreviations: NCS, Norwegian Counties study; CONOR, Cohort of Norway; 40-y, Age 40 Programme; VHM&PP, Vorarlberg Health Monitoring and Prevention Programme; VIP, Västerbotten Intervention Project; MPP, Malmö Preventive Project.