biostudies-literatureYang JM.S.I. Foundatione056543https://www.ebi.ac.uk/biostudies/studies/S-EPMC8772408biostudies-literatureUnknown12(1)<h4>Objectives</h4>It remains unclear whether vitamin D status is related to cancer risk. We examined this relationship using laboratory, administrative and survey data.<h4>Design</h4>Retrospective cohort study.<h4>Setting</h4>All care settings within Calgary, Alberta, Canada and surrounding rural communities.<h4>Participants</h4>Patients tested for serum 25-hydroxyvitamin D from 2009 to 2013 without a past cancer diagnosis but with an ECG and body mass index ±3 months from testing were included. Age, sex, mean hours of daylight during month of testing were linked to census dissemination area-level indicators of socioeconomic status measured in 2011.<h4>Primary and secondary outcome measures</h4>Hospital discharge diagnoses for any cancer, major cancer (colorectal, breast, lung, prostate, BMJ openSerum 25-hydroxyvitamin D and risk of cancer in a large community population under investigation for cardiovascular disease: a retrospective cohort study.PMC8772408871Yang JDong YNaugler CTde Koning LfalseSerum 25-hydroxyvitamin D and risk of cancer in a large community population under investigation for cardiovascular disease: a retrospective cohort study.<h4>Objectives</h4>It remains unclear whether vitamin D status is related to cancer risk. We examined this relationship using laboratory, administrative and survey data.<h4>Design</h4>Retrospective cohort study.<h4>Setting</h4>All care settings within Calgary, Alberta, Canada and surrounding rural communities.<h4>Participants</h4>Patients tested for serum 25-hydroxyvitamin D from 2009 to 2013 without a past cancer diagnosis but with an ECG and body mass index ±3 months from testing were included. Age, sex, mean hours of daylight during month of testing were linked to census dissemination area-level indicators of socioeconomic status measured in 2011.<h4>Primary and secondary outcome measures</h4>Hospital discharge diagnoses for any cancer, major cancer (colorectal, breast, lung, prostate, 2022-01-01T00:00:00Z2022 Jan2025-04-19T15:46:04.587Z2025-04-19T15:46:04.587ZS-EPMC87724083504600610.1136/bmjopen-2021-056543