Evidence map›Paper›PMID 28674149›Full record

ArticleBMJ open2017

Serum 25-hydroxyvitamin D level, chronic diseases and all-cause mortality in a population-based prospective cohort: the HUNT Study, Norway.

Yi-Qian Sun, Arnulf Langhammer, Frank Skorpen, Yue Chen, Xiao-Mei Mai

Open access · goldAbstract read
In one paragraph

Article in BMJ open, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 16 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
16citing papers in PubMed, 1 pooled it
2.2field-weighted citation impact, top 13% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

16 citing papers in PubMed, 1 synthesis or guideline pooled it, 21 citations in OpenAlex.

  1. Vitamin D Status and Mortality: A Systematic Review of Observational Studies.International journal of environmental research and public health · 2019
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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

5 authors at 2 institutions in 2 countries.

Yi-Qian SunDepartment of Laboratory Medicine, Children's and Women's Health (LBK), Trondheim, Norway.ORCID 0000-0002-9634-9236
Arnulf LanghammerDepartment of Public Health and Nursing, Norwegian University of Science and Technology, NTNU, Trondheim, Norway.
Frank SkorpenDepartment of Laboratory Medicine, Children's and Women's Health (LBK), Trondheim, Norway.
Yue ChenSchool of Epidemiology, Public Health and Preventive Medicine, Faculty of Medicine, University of Ottawa, Ottawa, Canada.
Xiao-Mei MaiDepartment of Public Health and Nursing, Norwegian University of Science and Technology, NTNU, Trondheim, Norway.
Norwegian University of Science and Technology · NOUniversity of Ottawa · CA

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

objectiveTo investigate the association of vitamin D status with all-cause mortality in a Norwegian population and the potential influences of existing chronic diseases on the association.

designA population-based prospective cohort study.

settingNord-Trøndelag County, Norway.

participantsA random sample (n=6613) of adults aged 20 years or older in a cohort.

methodsSerum 25-hydroxyvitamin D (25(OH)D) levels were measured in blood samples collected at baseline (n=6377). Mortality was ascertained from the Norwegian National Registry. Cox regression models were applied to estimate the HRs with 95% CIs for all-cause mortality in association with serum 25(OH)D levels after adjustment for a wide spectrum of confounding factors as well as chronic diseases at baseline.

resultsThe median follow-up time was 18.5 years, during which 1539 subjects died. The HRs for all-cause mortality associated with the first quartile level of 25(OH)D (<34.5 nmol/L) as compared with the fourth quartile (≥58.1 nmol/L) before and after adjustment for chronic diseases at baseline were 1.30 (95% CI 1.11 to 1.51) and 1.27 (95% CI 1.09 to 1.48), respectively. In the subjects without chronic diseases at baseline and with further exclusion of the first 3 years of follow-up, the corresponding adjusted HR was 1.34 (95% CI 1.09 to 1.66).

conclusionsLow serum 25(OH)D level was associated with increased all-cause mortality in a general Norwegian population. The association was not notably influenced by existing chronic diseases.

Indexed as

MortalityAdultAgedChronic DiseaseFemaleHumansMaleMiddle AgedNorwayProportional Hazards ModelsProspective StudiesRegistriesRisk FactorsVitamin DYoung Adult25-hydroxyvitamin DVitamin D25-hydroxyvitamin D (25(OH)D)all-cause mortalitychronic diseasesprospective cohort studyvitamin D

Identifiers

PMID28674149
PMCPMC5734252
OpenAlexW2726335954

What OpenQuestion holds

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LicenceCC BY-NC
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Registered trials

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.