Ischaemic heart disease among workers in occupations associated with heavy lifting
Harald Hannerz1, Andreas Holtermann2
1National Research Centre for the Working Environment, Copenhagen, Denmark (Department of Occupational Health). hha@nrcwe.dk.
Objectives:
To investigate a hypothesized positive association between employment in occupations where heavy lifting is likely to occur, and the risk of ischaemic heart disease (IHD).
Material And Methods:
Male blue-collar workers from Denmark (N = 516,180) were monitored with respect to hospital treatment or death due to IHD, through national registers over the years 2001-2010. Poisson regression was used to estimate relative rates of IHD between "workers in occupations which, according to an expert opinion, are likely to involve heavy lifting" and "other blue-collar workers." Prevalent cases were excluded from the analysis.
Results:
The rate ratio was estimated at 0.97 (95% confidence interval (CI): 0.94-1.00) for deaths or hospitalizations due to IHD and 1.07 (95% CI: 0.94-1.21) for deaths due to IHD.
Conclusions:
The results do not support the hypothesis that occupational heavy lifting is an important risk factor for IHD.
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