Cancer morbidity among Danish male urban bus drivers: A historical cohort study.
OBJECTIVE
To investigate whether urban bus drivers are at increased risk for cancer.


METHODS
Urban bus drivers in a cohort established in 1978 in the three largest cities of Denmark were followed-up in the Danish Cancer Registry until the end of 2003, and relative risks for cancers were estimated.


RESULTS
Of 2,037 men included 70% reported in 1978 that they smoked. The standardized incidence ratio (SIR) for cancer in comparison with that of other male residents of the three cities was 1.09 [1.0-1.2]. The excess was due mainly to increased risks for cancers of the bladder (SIR, 1.6; 1.2-2.0) and lung (1.2; 1.0-1.4). In an analysis with internal comparisons and adjustment for smoking, we found no significant associations between duration of employment and increased risks for cancers at these two sites.


CONCLUSIONS
In this long-term follow-up study we found little evidence of a causal association between employment as an urban bus driver in Denmark and subsequent cancer.
Petersen
Anne
A
Institute of Cancer Epidemiology, Copenhagen, Denmark.
Hansen
Johnni
J
Olsen
Jørgen H
JH
Netterstrøm
Bo
B
D000328:Adult; D000368:Aged; D000397:Air Pollution / Q000009:adverse effects*; D003718:Denmark; D006801:Humans; D008297:Male; D008875:Middle Aged; D018986:Motor Vehicles; D009369:Neoplasms / Q000453:epidemiology*; D009784:Occupational Diseases / Q000453:epidemiology / Q000209:etiology*; D016273:Occupational Exposure / Q000009:adverse effects*; D012307:Risk Factors; D014504:Urban Health; D001335:Vehicle Emissions
D001335:Vehicle Emissions