ArticlePloS one2019
Knowledge about dietary supplements and trust in advertising them: Development and validation of the questionnaires and preliminary results of the association between the constructs.
Article in PloS one, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT04184219 (Determinants of Knowledge About and Use of Dietary Supplements), which is not on this map. Cited by 24 papers.
What it found
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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.
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.
Determinants of Knowledge About and Use of Dietary Supplements
Who cites it
24 citing papers in PubMed.
- Article
- Article
- Insights into dietary supplements as popular product supporting the diet.Naunyn-Schmiedeberg's archives of pharmacology · 2026Review
- Article
- Knowledge of Dietary Supplements and Attitudes Towards Complementary Medicine Among University Students: A Cross-Sectional Study.Foods (Basel, Switzerland) · 2025Article
- [Misinformation and disinformation about dietary supplements in social media: limiting the risks, seizing the opportunities, and shaping structures].Bundesgesundheitsblatt, Gesundheitsforschung, Gesundheitsschutz · 2025Article
- Use of dietary supplements by individuals with dementia - the caregivers' perspective.Scandinavian journal of primary health care · 2025Article
- Why patients fail to seek information on OTC product interactions with a direct-acting oral anticoagulant: perspectives on information-seeking.BMC primary care · 2025Article
- Exploring motivations, information behavior, perceptions, and intentions among dietary supplement users: a cross-sectional survey study in Germany.Frontiers in nutrition · 2025Article
- A post-pandemic trend in the consumption of dietary supplements among residents of Lithuania.Central European journal of public health · 2024Observational
- Consumption of Dietary Supplements among Working-Age Residents of Lithuania in the Period from 2021 to 2023.Medicina (Kaunas, Lithuania) · 2024Article
- Evaluating knowledge, habits, and beliefs regarding dietary supplements as a protective measure against COVID-19 in Malaysia and Iraq: A postsecond wave cross-sectional analysis.Health science reports · 2024Article
- Patient-centric decision-making in supplements intake and disclosure in clinical practice: a novel SIDP-12 tool to prevent drug-supplement interaction.Therapeutic advances in drug safety · 2024Article
- Article
- Practice and knowledge of dietary supplement consumption among Indonesian adults post-delta wave of the COVID-19 pandemic.F1000Research · 2023Article
- Health literacy in dietary supplement use among working-age groups: systematic review and meta-analysis.Heliyon · 2022Article
- Health-Related Content of TV and Radio Advertising of Dietary Supplements-Analysis of Legal Aspects after Introduction of Self-Regulation for Advertising of These Products in Poland.International journal of environmental research and public health · 2022Article
- Factors That Influence the Use of Dietary Supplements among the Students of Wroclaw Medical University in Poland during the COVID-19 Pandemic.International journal of environmental research and public health · 2022Article
- Development of an Instrument to Measure Dietary Supplement Health Literacy.Health literacy research and practice · 2022Article
- Analysis of self-care strategies among nurses in southern Poland - a cross-sectional survey.International journal of occupational medicine and environmental health · 2022Article
Corrections and comments
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Authors and funding
7 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
backgroundDespite offering little overall benefit and emerging concerns about their safety, dietary supplements have become increasingly popular. Trust in advertising them may contribute to high confidence in dietary supplements in public opinion.
aimTo develop and validate a screening questionnaire intended for the general public regarding knowledge about dietary supplements and a questionnaire on trust in advertising dietary supplements, and to identify the association between these constructs. MATERIALS AND
methodsThe development and validation of the measures was overseen by the panels of experts. The conceptual frameworks of the constructs were scientifically well grounded. A set of semi-structured interviews and anonymous web-based surveys was performed. The final questionnaire was applied to 220 non-medically educated people and 121 medically educated people.
resultsA 17-item questionnaire on knowledge about dietary supplements and eight-item questionnaire on trust in advertising dietary supplements were developed. The measures presented satisfactory proof of validity, however, the psychometric properties of the questionnaire on knowledge were modest. Both the knowledge about dietary supplements in the study group and trust in advertising them were low. A significant negative relationship was found between knowledge about dietary supplements and trust in advertising them among the general public (Pearson's r = -0.42, 95%CI: -0.52 to -0.30, p<0.0001). This association was especially pronounced in people who reported not taking dietary supplements (Pearson's r = -0.61, 95%CI: -0.76 to -0.39, p<0.0001).
conclusionsThe extensive advertising of dietary supplements appears to be in conflict with promoting evidence-based knowledge about them, which raises substantial concerns for the public health. The results of the study are only preliminary and require further confirmation and exploration.
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Registered trials
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