Individual Study / SNMC

Swedish National March Cohort

Swedish National March Cohort

Initiatives -
Start Year
End Year
The Swedish Cancer Society, ICA AB and Telefonaktiebolaget LM Ericsson.
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Investigators Contacts
  • Dr. Prof. Weimin Ye
    Karolinska Institutet
  • Dr. Prof. Ylva Trolle Lagerros
    Karolinska Institutet


Study design
Population cohort
Follow Up
Essentially complete follow-up has since been attained through multiple record linkages, done approximately biannually, using the individually unique national registration numbers (NRNs) to insure exact linkages. We have linked the cohort to Statistics Swedens Register of the Total Population and Population Changes to obtain dates of death, relocations (with information about the new place of residence) and emigration, if any. Data from the Patient Register (covering all inhospital care and more recently also hospital-provided outpatient care), Cancer Register, and Causes of Death Register held by the National Board of Health and Welfare, have permitted accurate tracking of health and vital status of all cohort members. Another complete update (through 2009 in total 12 years of follow-up) was completed by the end of 2011. Follow-up of the cohort participants is updated through linkage with the cancer and patient registers till the end of 2016; information on mortality is however available till March 2018.

Marker Paper

Trolle Lagerros Y, Hantikainen E, Mariosa D, Ye W, Adami HO, Grotta A, Ghilotti F, Bellocco R. Cohort Profile: The Swedish National March Cohort. Int J Epidemiol. 2017 Jun 1;46(3):795-795e. doi: 10.1093/ije/dyw193.

PUBMED 27649800


Sources of Recruitment
  • Individuals

Number of participants

Number of participants
Number of participants with biosamples


Availability of data and biosamples


Availability of access information

On the study website :