Risk of lung, larynx, pharynx and buccal cavity cancers among carbon electrode manufacturing workers
Scandinavian Journal of Work, Environment and Health
Among wor kers emp loyed in factories producing carbon graphite products the risk of ca ncer due to expo sure to polyc yclic aromatic hydr ocarbons was estimated . In one cohort (plant A), a ca ncer incidence study was carried out ; the number of cases were not significantly increased for lung cancers [7 cases , sta ndardized inc ide nce ratio (SI R) 79] or for cancers of the upper respiratory an d alimentary tract (10 ca ses, SIR 103). In another co ho rt (plant B), a mortality study was ca
... ed out ; neither the mort alit y fr om lung cancer [13 deaths, standardized mo rta lity ratio (SMR ) 118] no r tha t fro m upper resp irat o ry an d alimentary trac t cancers (10 deaths, SMR 125) was significantly higher than expected . With in each co hort , a case-referent study was ca rried out. In plant A the odd s ratios were high but non significant for lung cancers (odd s ratio 3.42) and upper respiratory an d alime ntary tract cancers (odd s ratio 2.19) and they showe d a non sign ifica nt relationship with duration of expo sur e. In plant B, the odds rat ios were low for every ca ncer site.