Abstract
For 25 years residents of a rural area in southwestern Alberta have complained of health problems attributed to sour gas emissions from nearby natural gas refineries. We undertook a large epidemiologic study of the current health status and the selected morbidity rates among 2152 people in the exposed area. We established two comparison groups: one was a demographically similar unexposed population and the other a demographically different group also exposed to sour gas emissions in another region. The methods included a cross-sectional survey of current residents and separate historical cohort studies involving registry linkage to investigate cancer incidence and all-cause mortality. The cross-sectional survey involved a comprehensive health questionnaire, standardized clinical examinations by physicians blinded to the subjects' symptoms and concerns, and several laboratory tests. We were able to contact just under 60% of the people who we knew had moved from each area since 1958 and found no evidence of selective migration for health reasons. Although the residents of the exposed area reported an excess number of symptoms and health problems there were no significant differences in the mortality rate, incidence of cancer, reproductive problems, major ailments, hair levels of arsenic and certain metals or respiratory function between the groups.
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- Bender A. P., Williams A. N., Sprafka J. M., Mandel J. S., Straub C. P. Usefulness of comprehensive feasibility studies in environmental epidemiology investigations: a case study in Minnesota. Am J Public Health. 1988 Mar;78(3):287–290. doi: 10.2105/ajph.78.3.287. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Dales R. E., Spitzer W. O., Suissa S., Schechter M. T., Tousignant P., Steinmetz N. Respiratory health of a population living downwind from natural gas refineries. Am Rev Respir Dis. 1989 Mar;139(3):595–600. doi: 10.1164/ajrccm/139.3.595. [DOI] [PubMed] [Google Scholar]
- Murdie R. A., Spitzer W. O., Suissa S. Application of an Euclidian distance measure to the selection of reference areas in epidemiologic research concerning environmental issues. Scand J Work Environ Health. 1988 Jun;14(3):168–174. doi: 10.5271/sjweh.1935. [DOI] [PubMed] [Google Scholar]
- Schulte P. A., Ehrenberg R. L., Singal M. Investigation of occupational cancer clusters: theory and practice. Am J Public Health. 1987 Jan;77(1):52–56. doi: 10.2105/ajph.77.1.52. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Spitzer W. O. Report of the New Brunswick Task Force on the Environment and Reye's syndrome. Clin Invest Med. 1982;5(2-3):203–214. [PubMed] [Google Scholar]
- Spitzer W. O., Shenker S. C., Hill G. B. Cancer in a Montreal suburb: the investigation of a nonepidemic. Can Med Assoc J. 1982 Nov 15;127(10):971–974. [PMC free article] [PubMed] [Google Scholar]