Evidence map›Paper›PMID 40033138›Full record

ArticleEuropean journal of clinical nutrition2025

High prevalence of low vitamin D status in the Czech Republic: a retrospective study of 119,925 participants.

Drahomira Holmannova, Pavel Borsky, Jan Kremlacek, Jan Krejsek, Lenka Hodacova, Anabela Cizkova, Zdenek Fiala, Lenka Borska

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Article in European journal of clinical nutrition, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 5 papers.

0numbers the graph read from it
0cells of the map it votes in
5citing papers in PubMed
–field-weighted citation impact
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

5 citing papers in PubMed.

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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

8 authors.

Drahomira HolmannovaDepartment of Preventive Medicine, Faculty of Medicine in Hradec Kralove, Charles University, 500 03, Hradec Kralove, Czech Republic.ORCID http://orcid.org/0000-0002-9865-9991
Pavel BorskyDepartment of Preventive Medicine, Faculty of Medicine in Hradec Kralove, Charles University, 500 03, Hradec Kralove, Czech Republic. borskyp@lfhk.cuni.cz.ORCID http://orcid.org/0000-0001-5253-2808
Jan KremlacekDepartment of Medical Biophysics, Faculty of Medicine in Hradec Kralove, Charles University, 500 03, Hradec Kralove, Czech Republic.
Jan KrejsekDepartment of Clinical Immunology and Allergology, University Hospital Hradec Kralove and Faculty of Medicine in Hradec Kralove, Charles University, 500 03, Hradec Kralove, Czech Republic.
Lenka HodacovaDepartment of Preventive Medicine, Faculty of Medicine in Hradec Kralove, Charles University, 500 03, Hradec Kralove, Czech Republic.ORCID http://orcid.org/0000-0002-4263-762X
Anabela CizkovaSynlab czech s.r.o., 186 00, Praha, Czech Republic.
Zdenek FialaDepartment of Preventive Medicine, Faculty of Medicine in Hradec Kralove, Charles University, 500 03, Hradec Kralove, Czech Republic.
Lenka BorskaDepartment of Preventive Medicine, Faculty of Medicine in Hradec Kralove, Charles University, 500 03, Hradec Kralove, Czech Republic.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

objectivesGiven the high worldwide prevalence of vitamin D deficiency and its role in numerous diseases affecting mortality and morbidity, this study seeks to determine the prevalence of low 25-hydroxyvitamin D levels in the Czech Republic, where population-level data are currently lacking. STUDY

designThis retrospective study utilized a large dataset to analyze 25-hydroxyvitamin D levels over an extended period.

methodsWe analyzed data from 119,925 individuals aged 0-100 years categorizing them as sufficient (75-250 nmol/L), insufficient (50-75 nmol/L), or deficient (<50 nmol/L). We also examined levels of CRP, homocysteine, and their correlations with 25-hydroxyvitamin D levels across age groups. Age, sex, sampling month, sunlight exposure (monthly and annual), and influenza virus positivity were assessed for their relationship with the 25-hydroxyvitamin D levels.

resultsThe study found a high prevalence of 25-hydroxyvitamin D inadequacy, with sufficient levels observed in 65.6% of infants (0-12 months). The lowest prevalence of sufficiency was in the 6-15 years (19.2%) and 16-30 years (22.1%) groups. The highest deficiency prevalence was in the 91-100 years group (51.8%). 25-hydroxyvitamin D levels in all age groups and both sexes correlated with all selected parameters. Lower sun exposure, higher flu virus positivity, male gender, and elevated homocysteine and CRP levels were negatively correlated with 25-hydroxyvitamin D levels.

conclusionsThe prevalence of 25-hydroxyvitamin D inadequacy in the Czech Republic is high. It is advisable to consider testing, monitoring, and providing medical recommendations for vitamin D supplementation as part of health prevention strategies in the general population.

Indexed as

Vitamin DVitamin D DeficiencyAdolescentAdultAgedAged, 80 and overChildChild, PreschoolC-Reactive ProteinCzech RepublicFemaleHomocysteineHumansInfantInfant, NewbornMale25-hydroxyvitamin DC-Reactive ProteinHomocysteineVitamin D

Identifiers

PMID40033138
PMCPMC12274130

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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.