The Swedish Mammography Cohort (SMC) - The Swedish Mammography Cohort, SMC 1987

The Swedish Mammography Cohort (SMC) is a large population-based cohort of over 60,000 women in the counties of Uppsala and Västmanland. All women born 1914-1948 who were residing in Västmanland and Uppsala County and in the years 1987-1990 received an invitation to participate in a mammography screening programme were asked to answer a questionnaire about diet and lifestyle. Approximately 66,000 women answered the questionnaire. In the autumn 1997, a second survey was sent to these women to update the information about their eating habits. Additional follow-ups were done 2008/2009 and 2019. The study examine associations of environmental/modifiable risk factors with several cancer sites (e.g., breast, colorectal, endometrium, ovary, and renal cell cancer), myocardial infarction, stroke, osteoporosis, 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 Swedish Mammography Cohort are the same as the ones that have been used in the Cohort of Swedish Men (COSM). 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 Swedish Mammography Cohort (SMC) 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. Women born between 1914 and 1948, and living in Västmanland county between 1987 and 1989 or living in Uppsala County between 1988 and 1990, received an invitation by mail to participate in a mammography screening program, in total 90,303 women. The invitation included a six-page questionnaire that sought information on diet and alcohol intake (67-item food frequency questionnaire), parity, age at first childbirth, family history of breast cancer, weight, height, education level, and marital status. The questionnaire can be found at https://www.simpler4health.se/researchers/questionnaires/Opens in a new tab.