© 1988 Oxford University Press
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Socioeconomic Groups and Cancer Risk at Death in the Swiss Canton of Vaud
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* Vaud Cancer Registry, University Institute of Social and Preventive Medicine CHUV BH-06, 1011 Lausanne, Switzerland
Inter-University Consortium of Lombardy for Automatic Data Processing (CILEA) via R. Sanzio, 20090 Segrate, Milan, Italy
Mario Negri Institute for Pharmacological Research via Eritrea 62, 20157 Milan, Italy
Levi F (Vaud Cancer Registry, University Institute of Social and Preventive Medicine, CHUV BH-06, 1011 Lausanne, Switzerland), Negri E, La Vecchia C and Te V C. Socioeconomic groups and cancer risk at death in the Swiss Canton of Vaud. International Journal of Epidemiology 1988, 17: 711–717.
Data collected by the Cancer Registry of the Canton of Vaud, Switzerland, were used to estimate proportional mortality ratios (PMR) and mortality odds ratios (MOR) for various neoplasms according to social class and sector of occupation (agriculture versus others). Mortality ratios were elevated in lower social classes for cancers of the lung (MOR = 1.18 for social class IV or V vs I or II) and other sites strictly related to tobacco (mouth or pharynx, oesophagus and larynx; MOR = 1.70), and (though not significantly) for cancers of the stomach (MOR = 1.16) and uterus (MOR = 1.30 for cervix and 1.47 for corpus uteri). Furthermore, there was a strong negative social class gradient for thyroid cancer (a neoplasm with particularly elevated incidence and mortality in Switzerland), probably attributable to higher prevalence of iodine deficiency in lower social classes (MOR = 3.17). Positive social class gradients emerged for cancers of the intestines (MOR = 0.77 for social class IV or V), skin (MOR = 0.74) and prostate (MOR = 0.87). Agricultural workers showed decreased ratios for cancers of the lung (MOR = 0.75), cervix uteri (MOR = 0.72) and prostate (MOR = 0.80), and excess mortality from cancers of the upper digestive and respiratory sites (MOR = 1.22), stomach (MOR = 1.18), testis (MOR = 2.05) and lymphc-haematopoietic neoplasms, particularly myeloma (MOR = 2.14).
Revised 1 October 1987
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