The Cohort of Swedish Men (COSM) - The Cohort of Swedish Men, COSM 1997

The Cohort of Swedish Men is a large population-based cohort of over 45,000 men in the counties of Västmanland and Örebro. All men born 1918-1952 who were residing in Västmanland and Örebro County in 1997 received an invitation to participate in this research study and a questionnaire to answer and return. Approximately 48,000 men responded. Follow-ups were done during 2008/2009 and 2019. The study examine associations of environmental/modifiable risk factors with several cancer sites (e.g., prostate, colorectal and renal cell cancer), myocardial infarction, stroke, cataracts, as well as death causes. The study has a longitudinal design, and to complement the update on exposure data record linkages to the nationwide Cancer Register, the In-Patient Register, and the Cause of Death Register and Population Register are also done. The questionnaires used in the Cohort of Swedish men are the same as the ones that have been used in the Swedish Mammography Cohort (SMC). For updated information on questionnaires and variable lists please visit https://www.simpler4health.se/researchers/Opens in a new tab. Purpose: The general aim of the Cohort of Swedish Men (COSM) is to assess relationships between a number of modifiable factors (diet, vitamin supplement use, physical activity, smoking, alcohol, body weight, other anthropometric measures etc.) and the occurrence of several major chronic diseases. For more detailed information please visit the SIMPLER website, https://www.simpler4health.se/researchers/cohorts/Opens in a new tab. For restrictions in data use see https://www.simpler4health.se/researchers/rules-and-guidelines/Opens in a new tab and https://www.simpler4health.se/researchers/publication-policy/Opens in a new tab. In the fall of 1997 all men born between 1918 and 1952 in Västmanland and Örebro Counties (central Sweden), received an invitation to participate in the study, in total 100,303 men. The invitation included the same self-administered questionnaire used for the follow up of women in the Swedish Mammography Cohort in year 1997. The questionnaire included information about modifiable lifestyle factors such as diet, physical activity, smoking, weight, use of dietary supplements, some prescribed drugs, alcohol intake in addition to some gender specific questions. The questionnaire can be found at https://www.simpler4health.se/researchers/questionnaires/Opens in a new tab.