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The incidence of prostate cancer (6,972 cases) was increasing during the study period; the highest at all the times occurred in Social Class I (highest social class), 40\u201350% higher than in Social Class IV (lowest). The social class gradient was strongest in localized disease but there was some variation in incidence of non\u2010localized prostate cancer. A total of 174 testicular cancer cases were diagnosed during the study period. In the early 1970s, the incidence of testicular cancer in Social Class I was 5\u2010fold compared to Social Classes III and IV. Thereafter, the incidence rate decreased in Social Class I, but increased in the lower classes. The positive social class gradient was similar for seminomas and non\u2010seminomas. For penile cancer (<jats:italic>n<\/jats:italic> = 128), the incidence decreased over time and social class variation was small. Only 6 cases of scrotum cancer were observed. In testicular cancer the strong positive social class association in the early 1970s is disappearing along with converging incidence trend slopes in different social classes. The difference diminished to less than 2\u2010fold in the 1990s. Reasons for this observation remain open. \u00a9 2002 Wiley\u2010Liss, Inc.<\/jats:p>","DOI":"10.1002\/ijc.10749","type":"journal-article","created":{"date-parts":[[2002,11,25]],"date-time":"2002-11-25T14:08:10Z","timestamp":1038233290000},"page":"643-648","source":"Crossref","is-referenced-by-count":74,"title":["Socio\u2010economic differences in incidence rates of cancers of the male genital organs in Finland, 1971\u201395"],"prefix":"10.1002","volume":"102","author":[{"given":"Eero","family":"Pukkala","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Elisabete","family":"Weiderpass","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2002,10,22]]},"reference":[{"key":"e_1_2_6_2_2","first-page":"65","volume-title":"Social inequalities and cancer","author":"IARC","year":"1997"},{"key":"e_1_2_6_3_2","series-title":"Population Census 1970: occupation and social position","author":"Central Statistical Office of Finland","year":"1974"},{"key":"e_1_2_6_4_2","volume-title":"Occupational mortality in 1971\u201375. 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