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dc.contributor.authorGaksch, Martin
dc.contributor.authorJorde, Rolf
dc.contributor.authorGrimnes, Guri
dc.contributor.authorJoakimsen, Ragnar Martin
dc.contributor.authorSchirmer, Henrik
dc.contributor.authorWilsgaard, Tom
dc.contributor.authorMathiesen, Ellisiv B.
dc.contributor.authorNjølstad, Inger
dc.contributor.authorLøchen, Maja-Lisa
dc.contributor.authorMärz, Winfried
dc.contributor.authorKleber, Marcus E.
dc.contributor.authorTomaschitz, Andreas
dc.contributor.authorGrübler, Martin
dc.contributor.authorEiriksdottir, Gudny
dc.contributor.authorGudmundsson, Elias F.
dc.contributor.authorHarris, Tamara B.
dc.contributor.authorCotch, Mary Frances
dc.contributor.authorAspelund, Thor
dc.contributor.authorGudnason, Vilmundur
dc.contributor.authorRutters, Femke
dc.contributor.authorBeulens, Joline W.J.
dc.contributor.authorVan't Riet, Esther
dc.contributor.authorNijpels, Giel
dc.contributor.authorDekker, Jacqueline M.
dc.contributor.authorGrove-Laugesen, Diana
dc.contributor.authorRejnmark, Lars
dc.contributor.authorBusch, Markus A.
dc.contributor.authorMensink, Gert B.M.
dc.contributor.authorScheidt-Nave, Christa
dc.contributor.authorThamm, Michael
dc.contributor.authorSwart, Karin M.A.
dc.contributor.authorBrouwer, Ingeborg A.
dc.contributor.authorLips, Paul
dc.contributor.authorVan Schoor, Natasja M.
dc.contributor.authorSempos, Christopher T.
dc.contributor.authorDurazo-Arvizu, Ramón A.
dc.contributor.authorŠkrabáková, Zuzana
dc.contributor.authorDowling, Kirsten G.
dc.contributor.authorCashman, Kevin D.
dc.contributor.authorKiely, Mairead
dc.contributor.authorPilz, Stefan
dc.date.accessioned2018-02-14T09:20:50Z
dc.date.available2018-02-14T09:20:50Z
dc.date.issued2017-02-16
dc.description.abstractBackground:<br>Vitamin D deficiency may be a risk factor for mortality but previous meta-analyses lacked standardization of laboratory methods for 25-hydroxyvitamin D (25[OH]D) concentrations and used aggregate data instead of individual participant data (IPD). We therefore performed an IPD meta-analysis on the association between standardized serum 25(OH)D and mortality.<br>Methods:<br>In a European consortium of eight prospective studies, including seven general population cohorts, we used the Vitamin D Standardization Program (VDSP) protocols to standardize 25(OH)D data. Meta-analyses using a one step procedure on IPD were performed to study associations of 25(OH)D with all-cause mortality as the primary outcome, and with cardiovascular and cancer mortality as secondary outcomes. This meta-analysis is registered at ClinicalTrials.gov, number NCT02438488.<br>Findings:<br>We analysed 26916 study participants (median age 61.6 years, 58% females) with a median 25(OH)D concentration of 53.8 nmol/L. During a median follow-up time of 10.5 years, 6802 persons died. Compared to participants with 25(OH)D concentrations of 75 to 99.99 nmol/L, the adjusted hazard ratios (with 95% confidence interval) for mortality in the 25(OH)D groups with 40 to 49.99, 30 to 39.99, and <30 nmol/L were 1.15 (1.00–1.29), 1.33 (1.16–1.51), and 1.67 (1.44–1.89), respectively. We observed similar results for cardiovascular mortality, but there was no significant linear association between 25(OH)D and cancer mortality. There was also no significantly increased mortality risk at high 25(OH)D levels up to 125 nmol/L.<br>Interpretation:<br>In the first IPD meta-analysis using standardized measurements of 25(OH)D we observed an association between low 25(OH)D and increased risk of all-cause mortality. It is of public health interest to evaluate whether treatment of vitamin D deficiency prevents premature deaths.en_US
dc.descriptionSource at <a href=http://doi.org/10.1371/journal.pone.0170791>http://doi.org/10.1371/journal.pone.0170791</a>en_US
dc.identifier.citationGaksch, M., Jorde, R., Grimnes, G., Joakimsen, R., Schirmer, H., Wilsgaard, T., ... Pilz, S. Vitamin D and mortality: Individual participant data meta-analysis of standardized 25-hydroxyvitamin D in 26916 individuals from a European consortium. PLoS ONE. 2017;12:e0170791(2):1-15en_US
dc.identifier.cristinIDFRIDAID 1478497
dc.identifier.doi10.1371/journal.pone.0170791
dc.identifier.issn1932-6203
dc.identifier.urihttps://hdl.handle.net/10037/12160
dc.language.isoengen_US
dc.publisherPublic Library of Scienceen_US
dc.relation.journalPLoS ONE
dc.rights.accessRightsopenAccessen_US
dc.subjectVDP::Medisinske Fag: 700::Klinisk medisinske fag: 750en_US
dc.subjectVDP::Medical disciplines: 700::Clinical medical disciplines: 750en_US
dc.titleVitamin D and mortality: Individual participant data meta-analysis of standardized 25-hydroxyvitamin D in 26916 individuals from a European consortiumen_US
dc.typeJournal articleen_US
dc.typeTidsskriftartikkelen_US
dc.typePeer revieweden_US


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