Evidence map›Paper›PMID 28334095›Full record

ArticleChemical senses2017

Phantom Smells: Prevalence and Correlates in a Population-Based Sample of Older Adults.

Sara Sjölund, Maria Larsson, Jonas K Olofsson, Janina Seubert, Erika J Laukka

Open access · bronzeAbstract read
In one paragraph

Article in Chemical senses, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 25 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
25citing papers in PubMed, 1 pooled it
2.7field-weighted citation impact, top 11% 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

25 citing papers in PubMed, 1 synthesis or guideline pooled it, 55 citations in OpenAlex.

  1. Pooled it
  2. Review
  3. Article
  4. Article
  5. Clinical features of chronic fungal rhinosinusitis in Korean geriatric and non-geriatric patients.European archives of oto-rhino-laryngology : official journal of the European Federation of Oto-Rhino-Laryngological Societies (EUFOS) : affiliated with the German Society for Oto-Rhino-Laryngology - Head and Neck Surgery · 2023
    Article
  6. Article
  7. Olfactory Function and Olfactory Disorders.Laryngo- rhino- otologie · 2023
    Article
  8. Review
  9. Headache-Associated Phantosmia as a Harbinger of Lewy Body Dementia.The Journal of neuropsychiatry and clinical neurosciences · 2023
    Article
  10. Article
  11. Article
  12. International consensus statement on allergy and rhinology: Olfaction.International forum of allergy & rhinology · 2022
    Review
  13. Article
  14. Article
  15. Article
  16. Article
  17. Article
  18. Article
  19. Review
  20. 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

5 authors at 2 institutions in 1 country.

Sara SjölundGösta Ekman's Laboratory, Department of Psychology, Stockholm University, Frescati Hagväg 9 A, 10691 Stockholm, Sweden.
Maria LarssonGösta Ekman's Laboratory, Department of Psychology, Stockholm University, Frescati Hagväg 9 A, 10691 Stockholm, Sweden.
Jonas K OlofssonGösta Ekman's Laboratory, Department of Psychology, Stockholm University, Frescati Hagväg 9 A, 10691 Stockholm, Sweden.
Janina SeubertDepartment of Clinical Neuroscience, Psychology Division, Karolinska Institutet, Nobels väg 9, 17165 Stockholm, Sweden.
Erika J LaukkaAging Research Center, Department of Neurobiology, Care Sciences and Society, Karolinska Institutet and Stockholm University, Gävlegatan 16, 11330 Stockholm, Sweden.
Stockholm University · SEKarolinska Institutet · SE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Loss of olfactory function is common in old age, but evidence regarding qualitative olfactory dysfunction in the general older population is scarce. The current study investigates the prevalence and correlates of phantom smell experiences (phantosmia) in a population-based study (Swedish National Study on Aging and Care in Kungsholmen [SNAC-K]) of Swedish adults (n = 2569) aged between 60 and 90 years. Phantosmia was assessed through a standardized interview and defined as reporting having experienced an odor percept in the absence of any stimuli in the surrounding environment that could emit the odor. The relationships between phantosmia and demographic, genetic, health-related, and behavioral variables were analyzed with hierarchical logistic regression analyses. The overall prevalence of phantom smells was 4.9%, and was associated with female gender, carrying the met allele of the BDNF gene, higher vascular risk burden, and reporting distorted smell sensations (parosmia). Olfactory dysfunction was, however, not related to phantosmia. The most frequently reported phantom smell was smoky/burnt. A novel finding was that some individuals reported phantom smells with an autobiographical connotation. The results from this study indicate that the prevalence of phantosmia in the general older population is not negligible and that some factors that are beneficial for preserved olfactory function, such as female gender and the BDNF met allele, are also associated with the occurrence of phantom smells.

Indexed as

AgedAged, 80 and overAllelesBrain-Derived Neurotrophic FactorFemaleHumansMaleMiddle AgedOlfaction DisordersOlfactory PerceptionPrevalenceSex FactorsSwedenBrain-Derived Neurotrophic Factoraginggenetic polymorphismshallucinationsolfactory perceptionphantosmiapopulation based

Identifiers

PMID28334095
PMCPMC5863552
OpenAlexW2589286702

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC
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.