Design, setting and participants: Using the Western Australian Mesothelioma Register, we reviewed all cases of MM diagnosed in WA from 1960 to the end of 2008, and determined the primary source of exposure to asbestos. Categories of exposure were collapsed into seven groups: asbestos miners and millers from Wittenoom; all other asbestos workers; residents from Wittenoom; home maintenance/renovators; other people exposed but not through their occupation; and people with unknown asbestos exposure; or no known asbestos exposure. Latency periods and age at diagnosis for each group were calculated and compared.
Results: In WA, 1631 people (1408 men, 223 women) were diagnosed with MM between 1960 and 2008. Since 1981, there have been 87 cases (55 in men) of MM attributed to asbestos exposure during home maintenance and renovation, and an increasing trend in such cases, in both men and women. In the last 4 years of the study (2005–2008), home renovators accounted for 8.4% of all men and 35.7% of all women diagnosed with MM. After controlling for sex and both year and age at diagnosis, the latency period for people exposed to asbestos during home renovation was significantly shorter than that for all other exposure groups, but the shorter follow-up and difficulty recalling when exposure first occurred in this group may partly explain this.
Conclusions: MM after exposure to asbestos during home renovation is an increasing problem in WA, and these cases seem to have a shorter latency period than other types of exposure. MM cases related to renovation will probably continue to increase because of the many homes that have contained, and still contain, asbestos building products.
- 1. Landrigan PJ. The third wave of asbestos disease: exposure to asbestos in place. Public health control. Introduction. Ann N Y Acad Sci 1991; 643: xv-xvi.
- 2. National Occupational Health and Safety Commission. The incidence of mesothelioma in Australia 1999 to 2001, Australian Mesothelioma Register Report 2004. 16th report. Canberra: NOHSC, 2004. http://safeworkaustralia.gov.au/AboutSafeWorkAustralia/WhatWeDo/Publications/Documents/47/Australian_Mesothelioma_Register_Report_2004_Archived_PDF.pdf (accessed Jul 2011).
- 3. Leigh J, Davidson P, Hendrie L, Berry D. Malignant mesothelioma in Australia, 1945-2000. Am J Ind Med 2002; 41: 188-201.
- 4. Brown SK. Asbestos. In: Spengler JD, Samet JM, McCarthy JF, editors. Indoor air quality handbook. New York: McGraw-Hill Professional, 2001: 38.1-38.17.
- 5. Bianchi C, Giarelli L, Grandi G, et al. Latency periods in asbestos-related mesothelioma of the pleura. Eur J Cancer Prev 1997; 6: 162-166.
- 6. Marinaccio A, Binazzi A, Cauzillo G, et al. Analysis of latency time and its determinants in asbestos related malignant mesothelioma cases of the Italian register. Eur J Cancer 2007; 43: 2722-2728.
- 7. Reid A, Heyworth J, de Klerk NH, Musk B. Cancer incidence among women and girls environmentally and occupationally exposed to blue asbestos at Wittenoom, Western Australia. Int J Cancer 2008; 122: 2337-2344.
- 8. Howell M. ACT asbestos surveys - health risk assessment. Final report. ACT Asbestos Taskforce. Canberra: URS Pty Ltd, 2005. http://www.asbestos.act.gov.au/resources/pdfs/Asbestos_Health_Risk_08_05.pdf (accessed Jul 2011).
- 9. Howat P, Jalleh G, Lin C, et al. Residential exposure to asbestos: implications for public health. Proceedings of the 39th Annual Conference of the Public Health Association of Australia; 2009; Sep 28-30; Canberra. ISBN 978-1-8-75990-28-3.
- 10. Australian Bureau of Statistics. Australian social trends 2002. Canberra: ABS, 2002. (ABS Cat. No. 4102.0.)
- 11. Baum S, Hassan R. Home owners, home renovation and residential mobility. J Sociol 1999; 35: 23-41.
- 12. National Occupational Health and Safety Commission. Code of practice for the safe removal of asbestos. 2nd ed. Canberra: NOHSC, 2005. http://safeworkaustralia.gov.au/AboutSafeWorkAustralia/WhatWeDo/Publications/Documents/234/SafeRemoval%20ofAsbestos2ndEditionNOHSC2002_2005.pdf (accessed Jul 2011).
- 13. Bromwich D. The 2005 Australian Asbestos Codes of Practice: an occupational hygiene perspective. Occup Health Saf Aust NZ 2006; 22: 463-470.
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