ArticleAnnals of medicine2026
Epidemiology of olfactory dysfunction in China: a nationwide population-based cross-sectional study.
Article in Annals of medicine, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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.
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.
Who cites it
0 citing papers in PubMed.
No citing paper in PubMed yet.
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
8 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
backgroundOlfactory dysfunction is associated with adverse health outcomes such as neurodegenerative diseases. However, few large-scale epidemiological studies in China have focused on olfactory function using psychophysical testing. This study seeks to investigate the prevalence of olfactory dysfunction among healthy adults through a large-scale, nationwide survey and to examine its associations with demographic and other factors.
methodsThe study was conducted across multiple locations in China between 2023 and 2024, involving local residents aged 20 and above. A total of 12,153 participants underwent the T&T olfactometer test and completed a questionnaire survey. We reported the epidemiological burden of olfactory dysfunction and identify its demographic, behavioural and clinical correlates.
resultsThe overall prevalence of olfactory dysfunction in the participants was 15.3%. Age (PR increased with age, ≥70 years PR = 54.70; 95% CI, 17.60-170.08;
conclusionLarge-scale olfactory screening with the T&T olfactometer is viable. The prevalence of olfactory dysfunction demonstrates a progressive increase with advancing age. Independent factors associated with olfactory dysfunction include male gender, residing in rural areas, having lower educational levels, low income, current smoking and self-reported olfactory dysfunction.
Indexed as
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.