Evidence map›Paper›PMID 30488238›Full record

ArticleJournal of neurology2019

Incidence of Parkinson's disease in a large patient cohort with idiopathic smell and taste loss.

Antje Haehner, Carla Masala, Sophie Walter, Heinz Reichmann, Thomas Hummel

Abstract read
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In one paragraph

Article in Journal of neurology, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 61 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
61citing papers in PubMed, 2 pooled it
5.7field-weighted citation impact, top 3% 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

61 citing papers in PubMed, 2 syntheses or guidelines pooled it, 107 citations in OpenAlex.

  1. Pooled it
  2. Pooled it
  3. Article
  4. Diagnostics of olfactory dysfunction in Parkinson's disease - a literature overview and case series.Biomedical papers of the Medical Faculty of the University Palacky, Olomouc, Czechoslovakia · 2026
    Review
  5. Article
  6. Article
  7. Article
  8. Motor Cortex Disinhibition Correlates with Olfactory Dysfunction in Parkinson's Disease.Movement disorders : official journal of the Movement Disorder Society · 2025
    Article
  9. Article
  10. Facets of movement disorders- a tribute to Heinz Reichmann.Journal of neural transmission (Vienna, Austria : 1996) · 2024
    Article
  11. Observational
  12. Review
  13. Characteristics of higher depressive tendency in the patients with olfactory disorder.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 · 2024
    Article
  14. Hyposmia correlates with axial signs and gait disorder in Parkinson's disease: an Italian Olfactory Identification Test study.Neurological sciences : official journal of the Italian Neurological Society and of the Italian Society of Clinical Neurophysiology · 2024
    Article
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  19. Article
  20. Review

1 more citing papers are in PubMed but not listed here.

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 2 countries.

Antje HaehnerDepartment of Otorhinolaryngology, Smell and Taste Clinic, TU Dresden, 01307, Dresden, Germany. antje.haehner@uniklinikum-dresden.de.ORCID http://orcid.org/0000-0003-1311-8000
Carla MasalaSection of Physiology, Department of Biomedical Sciences, University of Cagliari, Cagliari, Italy.
Sophie WalterDepartment of Otorhinolaryngology, Smell and Taste Clinic, TU Dresden, 01307, Dresden, Germany.
Heinz ReichmannDepartment of Neurology, TU Dresden, 01307, Dresden, Germany.
Thomas HummelDepartment of Otorhinolaryngology, Smell and Taste Clinic, TU Dresden, 01307, Dresden, Germany.
Technische Universität Dresden · DEUniversity of Cagliari · IT

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

introductionPatients with idiopathic smell loss constitute an at-risk population for the development of Parkinson's disease (PD). The study aimed to follow up a large number of patients with idiopathic smell and/or taste loss to define the incidence of PD in this population and, further, to assess characteristics of both olfactory and gustatory function and their possible association with PD development.

methodsIn this prospective case-control study, 833 patients diagnosed with an idiopathic smell disorder at our Smell and Taste Center during the last 15 years were contacted for a telephone interview. In 474 patients, a complete data set containing of demographic data, clinical information, retrospective smell and taste testing results, and telephone assessment was obtained.

resultsOut of 474 patients with idiopathic smell loss 45 (9.8%) had been diagnosed with PD, since they received the diagnosis of idiopathic smell and/or taste loss (mean 10.9 years after olfactory loss onset). Thus, with respect to the classification into olfactory/gustatory disorders, 28.6% of the patients with a combined olfactory and gustatory disorder developed PD, whereas in 9.9% of those with a pure olfactory disorder and in 3.8% of those with a pure gustatory disorder, PD was diagnosed. No association emerged between qualitative smell or taste loss and PD development.

conclusionThis large patient cohort study extends the previous literature, indicating that risk stratification might be considerably improved by correct diagnostic allocation and emphasizes the need for an exhaustive olfactory and gustatory assessment in specialized centers.

Indexed as

Olfaction DisordersTaste DisordersAdultAgedAged, 80 and overCase-Control StudiesFemaleHumansIncidenceMaleMiddle AgedParkinson DiseaseProspective StudiesIdiopathic smell lossIdiopathic taste lossParkinson’s disease

Identifiers

PMID30488238
OpenAlexW2903235950

What OpenQuestion holds

Textmetadata
Read underepoch 390

Registered trials

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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.