Evidence map›Paper›PMID 25062727›Full record

ArticleOsteoporosis international : a journal established as result of cooperation between the European Foundation for Osteoporosis and the National Osteoporosis Foundation of the USA2014

Low serum concentrations of alpha-tocopherol are associated with increased risk of hip fracture. A NOREPOS study.

K Holvik, C G Gjesdal, G S Tell, G Grimnes, B Schei, E M Apalset, S O Samuelsen, R Blomhoff, K Michaëlsson, H E Meyer

Abstract readMulticenter Study
PubMed Publisher
In one paragraph

Article in Osteoporosis international : a journal established as result of cooperation between the European Foundation for Osteoporosis and the National Osteoporosis Foundation of the USA, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 17 papers.

0numbers the graph read from it
0cells of the map it votes in
17citing papers in PubMed
3.1field-weighted citation impact, top 10% 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

17 citing papers in PubMed, 34 citations in OpenAlex.

  1. Trial
  2. Review
  3. Role of vitamins in the development and treatment of osteoporosis (Review).International journal of molecular medicine · 2025
    Review
  4. Article
  5. Role of vitamins beyond vitamin DInternational journal of molecular medicine · 2024
    Review
  6. Review
  7. Article
  8. Article
  9. Vitamin E beyond Its Antioxidant Label.Antioxidants (Basel, Switzerland) · 2021
    Review
  10. Article
  11. Review
  12. Article
  13. Article
  14. A combination of low serum concentrations of vitamins K1 and D is associated with increased risk of hip fractures in elderly Norwegians: a NOREPOS study.Osteoporosis international : a journal established as result of cooperation between the European Foundation for Osteoporosis and the National Osteoporosis Foundation of the USA · 2016
    Article
  15. Review
  16. Article
  17. Article
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

10 authors at 7 institutions in 2 countries.

K HolvikDivision of Epidemiology, Norwegian Institute of Public Health, P.O. Box 4404, Nydalen, 0403, Oslo, Norway, kristin.holvik@fhi.no.
C G Gjesdal
G S Tell
G Grimnes
B Schei
E M Apalset
S O Samuelsen
R Blomhoff
K Michaëlsson
H E Meyer
Norwegian Institute of Public Health · NOUniversity of Bergen · NOHaukeland University Hospital · NONorwegian University of Science and Technology · NOOslo University Hospital · NOUiT The Arctic University of Norway · NOUppsala University · SE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

unlabelledWe investigated the risk of hip fracture according to circulating alpha-tocopherol, a plant-derived substance with antioxidant properties, in community-dwelling older Norwegians. We found a linear increasing risk of hip fracture with lower serum alpha-tocopherol concentrations, with a 51% higher risk in the lowest compared to the highest quartile.

introductionOxidative stress is a suggested contributing cause of osteoporosis and fractures. Vitamin E (α-tocopherol) has potent antioxidant properties in humans. The relationship between circulating α-tocopherol and fracture risk is not established. The aim of this study was to investigate the association between serum α-tocopherol concentrations and risk of hip fracture during up to 11 years of follow-up.

methodsWe performed a case-cohort analysis among 21,774 men and women aged 65-79 years who participated in four community-based health studies in Norway 1994-2001. Serum α-tocopherol concentrations at baseline were determined in 1,168 men and women who subsequently suffered hip fractures (median follow-up 8.2 years) and in a random sample (n = 1,434) from the same cohort. Cox proportional hazard regression adapted for gender-stratified case-cohort data was performed.

resultsMedian (25, 75 percentile) serum α-tocopherol was 30.0 (22.6, 38.3) μmol/L, and it showed a linear inverse association with hip fracture: hazard ratio (HR) 1.11 (95% confidence interval (CI) 1.04-1.20) per 10-μmol/L decrease in serum α-tocopherol, adjusted for gender and study center. The lowest compared to the highest quartile conferred an HR of 1.51 (95% CI 1.17-1.95), adjusted for gender and study center. Adjustment for smoking, month of blood sample, BMI, education, physical inactivity, self-rated health, and serum 25-hydroxyvitamin D (25(OH)D) yielded similar results. Taking serum total cholesterol concentration into account attenuated the association somewhat: HR of hip fracture was 1.37 (95% CI 1.05-1.77) in first versus fourth quartile of serum α-tocopherol/total cholesterol ratio.

conclusionsLow serum concentrations of α-tocopherol were associated with increased risk of hip fracture in older Norwegians.

Indexed as

Agedalpha-TocopherolBiomarkersCholesterolFemaleFollow-Up StudiesHip FracturesHumansMaleNorwayOsteoporotic FracturesRisk FactorsVitamin E Deficiencyalpha-TocopherolBiomarkersCholesterol

Identifiers

PMID25062727
OpenAlexW2045280347

What OpenQuestion holds

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Read underepoch 390

Registered trials

None linked

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.