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Time trends in socio‐economic differences in incidence rates of cancers of the breast and female genital organs (Finland, 1971–1995)
Author(s) -
Pukkala Eero,
Weiderpass Elisabete
Publication year - 1999
Publication title -
international journal of cancer
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.475
H-Index - 234
eISSN - 1097-0215
pISSN - 0020-7136
DOI - 10.1002/(sici)1097-0215(19990331)81:1<56::aid-ijc11>3.0.co;2-4
Subject(s) - corpus uteri , cervix , social class , demography , population , gynecology , breast cancer , socioeconomic status , incidence (geometry) , cancer , vulva , medicine , pathology , physics , optics , sociology , political science , law
The magnitude of socio‐economic differences in health varies between societies, and over time within societies. Even in the Nordic countries, where socio‐economic differences are not as striking as elsewhere, such differences have been observed. We have studied social class variation among 45‐ to 69‐year‐old Finns during 1971–1995 in the incidence of cancers of the breast, ovary, corpus and cervix uteri, vulva and vagina, by means of a computerised record linkage of the Finnish Cancer Registry and the 1970 Population Census, which included social class data. Cancers of cervix uteri (both invasive and in situ ) and vagina were associated with low social class. Cancers of the breast (both in men and women) were most common in high social classes throughout the whole observation period 1971–1995, whereas for cancer of the corpus uteri, the positive social class association disappeared in the early 1980s. For cancer of the vulva and ovary, no clear differences by social class were observed. We believe that socio‐economic differences usually point to life styles or life conditions ( e.g., reproductive patterns, viral infections, diet, physical activity, prevalence of overweight and obesity, smoking and alcohol consumption or combinations of these factors) that may be risk factors for the specific cancers studied. Int. J. Cancer 81:56–61, 1999. © 1999 Wiley‐Liss, Inc.