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One of the largest ever studies to examine the prevalence of cardiovascular risk factors among commercial aircrew has found significantly lower prevalence of smoking and obesity than in the general population, even when comparisons were made with comparably high income earners. The study, reported today in the European Journal of Cardiovascular Prevention and Rehabilitation, was an analysis of data derived from the medical examinations of 14,379 pilots holding a commercial standard medical certificate issued in the UK.(1) Only 5.6 per cent were women, which, say the investigators, represents the proportion of the UK pilot workforce. The risk factors evaluated (within stratified age bands) were body mass index, overweight and obesity, smoking, hypertension and diabetes. Prevalence rates were compared first with those of the UK general population as represented by the 2006 Health Survey for England, and then with those of the "highest income quintile" of the general population to control for the influence of socio-economic status.(2)Results showed that the pilots had significantly lower prevalence of smoking and obesity compared to the general population.
When age-matched to the highest income quartile of the general population, prevalence differences were as follows:
The differences in prevalence rates for smoking and obesity were statistically significant. Commenting on the results, principal investigator Dr Stephen Houston, Chief Medical Officer for the airline bmi, British Midland International, said: "Aviation authorities throughout the world have become increasingly interested in profiling the cardiovascular risk of commercial pilots. In Australia, for instance, further ECG stress testing is required for crew who have risk factors above a certain level.” "What our study indicates is that the prevalence of two important cardiovascular risk factors among UK pilots - smoking and obesity - is much lower than in the general population. The higher rates of overweight may be because of the sedentary lifestyle, irregular shift work patterns and the poor diet associated with night-stopping away from home.” "This is one the largest studies ever performed on cardiovascular risk factors among aircrew, and the results have strength because of the study's size. However, we can't rule out a 'healthy worker effect'. Since an individual must be relatively healthy to be employable and to remain in the workforce, it follows that cardiovascular morbidity and mortality may be lower than in the general population." ENDS
1. Houston S, Mitchell S, Evans S. Prevalence of cardiovascular disease risk factors among United Kingdom commercial pilots. Eur J Cardiovasc Prev Rehabil 2011; DOI: 10.1177/1741826710389417 2. Cardiovascular disease and risk factors in adults: Health Survey for England, The Information Centre, National Centre for Social Research, 2006. * The European Journal of Cardiovascular Prevention and Rehabilitation is a journal of the European Society of Cardiology. * Cardiovascular disease, and particularly coronary heart disease, is the leading cause of death in Europe, accounting for 43% of all deaths in men and 55% in women. There are marked differences in prevalence between countries. * More information on this press release and a PDF of the paper is available from the ESC’s press office at email@example.com About the European Society of Cardiology The European Society of Cardiology (ESC) represents more than 68,000 cardiology professionals across Europe and the Mediterranean. Its mission is to reduce the burden of cardiovascular disease in Europe.
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