Evidence map›Paper›PMID 24225359›Full record

Observational studyThe American journal of clinical nutrition2014

Intake and serum concentrations of α-tocopherol in relation to fractures in elderly women and men: 2 cohort studies.

Karl Michaëlsson, Alicja Wolk, Liisa Byberg, Johan Ärnlöv, Håkan Melhus

Open access · bronzeAbstract readObservational Study
In one paragraph

Observational study in The American journal of clinical nutrition, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 32 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
32citing papers in PubMed, 1 pooled it
5.8field-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.

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

32 citing papers in PubMed, 1 synthesis or guideline pooled it, 56 citations in OpenAlex.

  1. Pooled it
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  7. Role of vitamins beyond vitamin DInternational journal of molecular medicine · 2024
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  13. Vitamin E beyond Its Antioxidant Label.Antioxidants (Basel, Switzerland) · 2021
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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 3 institutions in 2 countries.

Karl MichaëlssonDepartment of Surgical Sciences, Orthopedics, Uppsala University, Uppsala, Sweden (KM and LB); the Division of Nutritional Epidemiology, Institute of Environmental Medicine, Karolinska Institutet, Stockholm, Sweden (AW); the School of Health and Social Studies, Dalarna University, Falun, Sweden (JÄ); the Department of Public Health and Caring Sciences, Geriatrics, Uppsala University, Uppsala, Sweden (JÄ); and the Department of Medical Sciences, Clinical Pharmacology, Uppsala University, Uppsala, Sweden (HM).
Alicja Wolk
Liisa Byberg
Johan Ärnlöv
Håkan Melhus
Uppsala University · SEDalarna University · SEKarolinska Institutet · SE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundA reduction in the formation of free radicals and oxidative stress might reduce the rate of bone loss and muscle wasting.

objectiveThe objective was to determine whether α-tocopherol intake or serum concentrations are associated with fracture risk in older women and men.

designTwo cohort studies, the Swedish Mammography Cohort (SMC; n = 61,433 women) and the Uppsala Longitudinal Study of Adult Men (ULSAM; n = 1138 men), were used.

resultsDuring 19 y of follow-up, 14,738 women in the SMC experienced a first fracture at any site (3871 hip fractures). A higher hip fracture rate was observed with lower intakes of α-tocopherol. Compared with the highest quintile of intake, the lowest quintile had a multivariable-adjusted HR of 1.86 (95% CI: 1.67, 2.06). The HR of any fracture was 1.20 (95% CI: 1.14, 1.28). α-Tocopherol-containing supplement use was associated with a reduced rate of hip fracture (HR: 0.78; 95% CI: 0.65, 0.93) and any fracture (HR: 0.86; 95% CI: 0.78, 0.94). Compared with the highest quintile of α-tocopherol intake in ULSAM (follow-up: 12 y), lower intakes (quintiles 1-4) were associated with a higher rate of hip fracture (HR: 3.33; 95% CI: 1.43, 7.76) and any fracture (HR: 1.84; 95% CI: 1.18, 2.88). The HR for hip fracture in men for each 1-SD decrease in serum α-tocopherol was 1.58 (95% CI: 1.13, 2.22) and for any fracture was 1.23 (95% CI: 1.02, 1.48).

conclusionLow intakes and low serum concentrations of α-tocopherol are associated with an increased rate of fracture in elderly women and men.

Indexed as

Dietary SupplementsAdultAgedalpha-TocopherolBone and BonesDiet SurveysFemaleFollow-Up StudiesFractures, BoneHumansLongitudinal StudiesMaleMiddle AgedMultivariate AnalysisMuscle, SkeletalProportional Hazards Modelsalpha-Tocopherol

Identifiers

PMID24225359
PMCPMC3862449
OpenAlexW2115214244

What OpenQuestion holds

Textmetadata
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.