Swedish Mammography Cohort

NCT ID: NCT01127698

Last Updated: 2014-02-28

Basic Information

• Recruitment Status: COMPLETED
• Total Enrollment: 61433 participants
• Study Classification: OBSERVATIONAL
• Study Start Date: 1987-03-31

Brief Summary

The Swedish Mammography Cohort began in 1987-1990, when 66,651 women living in two counties in central Sweden completed a mailed questionnaire that included items about their diet, parity, age at first child's birth, history of breast cancer in family, weight, height, and education. Follow-up questionnaires have been sent out in 1997 and in 2008-09.

Detailed Description

From 1987 to 1990 a population-based mammography screening program was introduced in two counties in central Sweden. In Västmanland County all women born between 1917 and 1948 received a mailed invitation to be screened by mammography between March 1987 and March 1989 (n=41,786) together with a 6-page questionnaire; 31,735 women (76%) returned the completed questionnaires. In Uppsala County all women born between 1914 and 1948 were invited to the screening and received the same questionnaire between January 1988 and December 1990 (n=48517); 34916 women (72%) returned the completed questionnaires. Hence, questionnaires completed before undergoing mammography were obtained from 66,651 women (74%) in the source population. These questionnaires included items about diet, parity, age at first child's birth, history of breast cancer in family, weight, height, and education.

In 1997 a second questionnaire was sent to all cohort members who were still living in the study area. The questionnaire updated information about diet and was extended to include information on physical activity, medical history, age at menarche, history of oral contraceptive use, age at menopause, postmenopausal hormone use and lifestyle factors such as cigarette smoking history and use of dietary supplements. Majority of questions in the questionnaires have been validated.

During 2008-09, the exposure information was updated and extended by sending out two new questionnaires - one questionnaire on health including several signs of symptoms, sleeping, social relations etc (2008) and one on diet, dietary supplement use, and lifestyle factors (2009).

Incident cases of cancer are ascertained by record linkages of the study population with the National Swedish Cancer Register and the Regional Cancer Registers. Cardiovascular and other diseases as well as surgeries and causes of death are identified by linkage to the National Inpatient and other registries at the Swedish Board of Health and Welfare. Ascertainment of cancer cases and other diseases is almost 100% complete. Dates of deaths are ascertained through the Swedish Death Register (100% complete), and information on date of moving out of the study area is obtained by linkage with the Swedish Population Register.

Conditions

Cancers; Cardiovascular Diseases; Cataract; Gastrointestinal Diseases; Osteoporosis; Fractures

Study Design

• Observational Model Type: COHORT
• Study Time Perspective: PROSPECTIVE

Eligibility Criteria

Inclusion Criteria

• All women born between 1914 and 1948, living in central Sweden

Exclusion Criteria

• None

• Minimum Eligible Age: 40 Years
• Maximum Eligible Age: 74 Years
• Eligible Sex: FEMALE
• Accepts Healthy Volunteers: No

Sponsors

Harvard School of Public Health (HSPH)

OTHER

Sponsor Role: collaborator

Karolinska Institutet

OTHER

Sponsor Role: lead

Responsible Party

Alicja Wolk

Professor

Responsibility Role: PRINCIPAL_INVESTIGATOR

References

Larsson SC, Drca N, Bjorck M, Back M, Wolk A. Nut consumption and incidence of seven cardiovascular diseases. Heart. 2018 Oct;104(19):1615-1620. doi: 10.1136/heartjnl-2017-312819. Epub 2018 Apr 16.

Reference Type: DERIVED

PMID: 29661934 (View on PubMed)

Larsson SC, Wallin A, Hakansson N, Stackelberg O, Back M, Wolk A. Type 1 and type 2 diabetes mellitus and incidence of seven cardiovascular diseases. Int J Cardiol. 2018 Jul 1;262:66-70. doi: 10.1016/j.ijcard.2018.03.099. Epub 2018 Mar 24.

Reference Type: DERIVED

PMID: 29605469 (View on PubMed)

Roze JC, Ancel PY, Lepage P, Martin-Marchand L, Al Nabhani Z, Delannoy J, Picaud JC, Lapillonne A, Aires J, Durox M, Darmaun D, Neu J, Butel MJ; Nutrition EPIPAGE 2 study group; EPIFLORE Study Group. Nutritional strategies and gut microbiota composition as risk factors for necrotizing enterocolitis in very-preterm infants. Am J Clin Nutr. 2017 Sep;106(3):821-830. doi: 10.3945/ajcn.117.152967. Epub 2017 Jun 28.

Reference Type: DERIVED

PMID: 28659297 (View on PubMed)

Larsson SC, Wolk A. Potato consumption and risk of cardiovascular disease: 2 prospective cohort studies. Am J Clin Nutr. 2016 Nov;104(5):1245-1252. doi: 10.3945/ajcn.116.142422. Epub 2016 Sep 28.

Reference Type: DERIVED

PMID: 27680993 (View on PubMed)

Bellavia A, Stilling F, Wolk A. High red meat intake and all-cause cardiovascular and cancer mortality: is the risk modified by fruit and vegetable intake? Am J Clin Nutr. 2016 Oct;104(4):1137-1143. doi: 10.3945/ajcn.116.135335. Epub 2016 Aug 24.

Reference Type: DERIVED

PMID: 27557655 (View on PubMed)

Xu H, Akesson A, Orsini N, Hakansson N, Wolk A, Carrero JJ. Modest U-Shaped Association between Dietary Acid Load and Risk of All-Cause and Cardiovascular Mortality in Adults. J Nutr. 2016 Aug;146(8):1580-5. doi: 10.3945/jn.116.231019. Epub 2016 Jul 6.

Reference Type: DERIVED

PMID: 27385761 (View on PubMed)

Larsson SC, Tektonidis TG, Gigante B, Akesson A, Wolk A. Healthy Lifestyle and Risk of Heart Failure: Results From 2 Prospective Cohort Studies. Circ Heart Fail. 2016 Apr;9(4):e002855. doi: 10.1161/CIRCHEARTFAILURE.115.002855.

Reference Type: DERIVED

PMID: 27072861 (View on PubMed)

Larsson SC, Wallin A, Wolk A. Dietary Approaches to Stop Hypertension Diet and Incidence of Stroke: Results From 2 Prospective Cohorts. Stroke. 2016 Apr;47(4):986-90. doi: 10.1161/STROKEAHA.116.012675. Epub 2016 Feb 11.

Reference Type: DERIVED

PMID: 26869384 (View on PubMed)

Larsson SC, Hakansson N, Wolk A. Dietary cysteine and other amino acids and stroke incidence in women. Stroke. 2015 Apr;46(4):922-6. doi: 10.1161/STROKEAHA.114.008022. Epub 2015 Feb 10.

Reference Type: DERIVED

PMID: 25669310 (View on PubMed)

Oskarsson V, Orsini N, Sadr-Azodi O, Wolk A. Fish consumption and risk of non-gallstone-related acute pancreatitis: a prospective cohort study. Am J Clin Nutr. 2015 Jan;101(1):72-8. doi: 10.3945/ajcn.113.076174. Epub 2014 Nov 5.

Reference Type: DERIVED

PMID: 25527752 (View on PubMed)

Bellavia A, Larsson SC, Bottai M, Wolk A, Orsini N. Differences in survival associated with processed and with nonprocessed red meat consumption. Am J Clin Nutr. 2014 Sep;100(3):924-9. doi: 10.3945/ajcn.114.086249. Epub 2014 Jul 16.

Reference Type: DERIVED

PMID: 25030780 (View on PubMed)

Bellavia A, Larsson SC, Bottai M, Wolk A, Orsini N. Fruit and vegetable consumption and all-cause mortality: a dose-response analysis. Am J Clin Nutr. 2013 Aug;98(2):454-9. doi: 10.3945/ajcn.112.056119. Epub 2013 Jun 26.

Reference Type: DERIVED

PMID: 23803880 (View on PubMed)

Genkinger JM, Friberg E, Goldbohm RA, Wolk A. Long-term dietary heme iron and red meat intake in relation to endometrial cancer risk. Am J Clin Nutr. 2012 Oct;96(4):848-54. doi: 10.3945/ajcn.112.039537. Epub 2012 Sep 5.

Reference Type: DERIVED

PMID: 22952183 (View on PubMed)

Larsson SC, Virtamo J, Wolk A. Fish consumption and risk of stroke in Swedish women. Am J Clin Nutr. 2011 Mar;93(3):487-93. doi: 10.3945/ajcn.110.002287. Epub 2010 Dec 29.

Reference Type: DERIVED

PMID: 21191140 (View on PubMed)

Related Links

http://ki.se/ki/jsp/polopoly.jsp?l=en&d=20996

Unit of Nutritional Epidemiology

Other Identifiers

1706/2010-631-1

Identifier Type: -

Identifier Source: org_study_id