Evidence map›Paper›PMID 20642395›Full record

ArticleScandinavian journal of primary health care2010

Vitamin D status in patients with musculoskeletal pain, fatigue and headache: a cross-sectional descriptive study in a multi-ethnic general practice in Norway.

Kirsten Valebjørg Knutsen, Mette Brekke, Svein Gjelstad, Per Lagerløv

Registry-linked trialOpen access · bronzeAbstract readComparative Study
In one paragraph

Article in Scandinavian journal of primary health care, 2010. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT01263288 (Effect of Vitamin D Supplementation on Muscular Strength, Musculoskeletal Pain and Headache in Immigrants Living in Norway. Randomized, Double Blinded, Placebo Controlled Study), which is not on this map. Cited by 70 papers, 3 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
70citing papers in PubMed, 3 pooled it
5.0field-weighted citation impact, top 4% 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.

NCT01263288 phase4completednot on this mapstarted 2011, after this paper: background citation

Effect of Vitamin D Supplementation on Muscular Strength, Musculoskeletal Pain and Headache in Immigrants Living in Norway. Randomized, Double Blinded, Placebo Controlled Study

TypeinterventionalSponsorPer LagerlovRan2011 to 2013Enrolled251ConditionsVitamin DeficiencyArmscholecalciferol, Placebo
3 · Its place in the literature

Who cites it

70 citing papers in PubMed, 3 syntheses or guidelines pooled it, 147 citations in OpenAlex.

  1. Pooled it
  2. Vitamin D in migraine headache: a comprehensive review on literature.Neurological sciences : official journal of the Italian Neurological Society and of the Italian Society of Clinical Neurophysiology · 2019
    Pooled it
  3. Pooled it
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  17. Dry Eye Disease: What Is the Role of Vitamin D?International journal of molecular sciences · 2023
    Review
  18. Vitamin D in Neurological Diseases.International journal of molecular sciences · 2022
    Review
  19. Review
  20. Review on Headache Related to Dietary Supplements.Current pain and headache reports · 2022
    Review

10 more citing papers are in PubMed but not listed here.

4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

4 authors at 1 institution in 1 country.

Kirsten Valebjørg KnutsenDepartment of General Practice and Community Medicine, Institute of Health and Society, University of Oslo, Norway. k.i.v.knutsen@medisin.uio.no
Mette Brekke
Svein Gjelstad
Per Lagerløv
University of Oslo · NO

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

objectiveTo investigate vitamin D levels in patients with non-specific musculoskeletal pain, headache, and fatigue.

designA cross-sectional descriptive study.

settingA health center in Oslo, Norway, with a multi-ethnic population. SUBJECTS: A total of 572 patients referred by a general practitioner (GP) for an examination of hypovitaminosis D who reported musculoskeletal pain, headache, or fatigue. The patients' native countries were: Norway (n = 249), Europe, America, and South-East Asia (n = 83), and the Middle East, Africa, and South Asia (n = 240). Both genders and all ages were included.

main outcome measuresVitamin D levels (25-hydroxyvitamin D) in nmol/L.

resultsHypovitaminosis D (25-hydroxyvitamin D < 50 nmol/L) was found in 58% of patients. One-third of ethnic Norwegians had hypovitaminosis D, while 83% of patients from the Middle East, Africa, and South Asia had hypovitaminosis D with minimal seasonal variation of levels. One in two women from these countries had a vitamin D level below 25 nmol/L. Mean vitamin D level was lower in patients with headaches compared with patients with other symptoms. Some 15% of patients with low (< 50 nmol/L) vitamin D levels reported headaches, compared with 5% of those with normal vitamin D levels.

conclusionOur study shows a high prevalence of hypovitaminosis D in patients with non-specific musculoskeletal pain, headache, or fatigue for whom the GP had suspected a low vitamin D level. Hypovitaminosis D was not restricted to immigrant patients. These results indicate that GPs should maintain awareness of hypovitaminosis D and refer patients who report headaches, fatigue, and musculoskeletal pain with minimal sun exposure and a low dietary vitamin D intake for assessment.

Indexed as

AdultCross-Sectional StudiesFatigueFemaleHeadacheHumansMaleMusculoskeletal DiseasesNorwayPainSunlightVitamin DVitamin D Deficiency25-hydroxyvitamin DVitamin D

Identifiers

PMID20642395
PMCPMC3442332
OpenAlexW1969969747

What OpenQuestion holds

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Registered trials

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.