ArticleNPJ Parkinson's disease2023
Predictive value of abbreviated olfactory tests in prodromal Parkinson disease.
Article in NPJ Parkinson's disease, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 5 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.
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Who cites it
5 citing papers in PubMed.
- Olfactory sensory map is perturbed in a human wild-type α-synuclein overexpressing transgenic mouse model of Parkinson's disease.NPJ Parkinson's disease · 2026Article
- Olfactory-to-Entorhinal Network Dysrhythmias Drive Parkinson's Cognitive Impairment Through Frequency-Specific Oscillatory Decoupling.Advanced science (Weinheim, Baden-Wurttemberg, Germany) · 2026Article
- Idiopathic hyposmia as a marker of prodromal Parkinson's disease - a cohort study.Scientific reports · 2025Article
- Development of a simplified smell test to identify Parkinson's disease using multiple cohorts, machine learning and item response theory.NPJ Parkinson's disease · 2025Article
- Hyposmia in Parkinson's disease; exploring selective odour loss.NPJ Parkinson's disease · 2025Article
Corrections and comments
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Authors and funding
6 authors.
Funding
Abstract
There is disagreement in the literature whether olfaction may show specific impairments in Parkinson Disease (PD) and if olfactory tests comprised of selected odors could be more specific for diagnosis. We sought to validate previously proposed subsets of the University of Pennsylvania Smell Identification Test (UPSIT) odors for predicting conversion to PD in an independent, prodromal cohort. Conversion to PD was assessed in 229 participants in the Parkinson At Risk Study who completed baseline olfactory testing with the UPSIT and up to 12 years of clinical and imaging evaluations. No commercially available or proposed subset performed better than the full 40-item UPSIT. The proposed "PD-specific" subsets also did not perform better than expected by chance. We did not find evidence for selective olfactory impairment in Parkinson disease. Shorter odor identification tests, including commercially available 10-12 item tests, may have utility for ease of use and cost, but not for superior predictive value.
Identifiers
What OpenQuestion holds
Registered trials
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.