Dataset for: The Effectiveness of Olfactory Training for Chronic Olfactory Disorder Following COVID-19: A Systematic Review

<p>This dataset provides a structured summary of data collected as part of a systematic review on the effectiveness of olfactory training (OT) in patients with chronic olfactory dysfunction following COVID-19. The dataset includes data extracted from 14 empirical studies (RCTs, cohort, and comparative studies) published between 2021 and 2024 that met predefined inclusion criteria (e.g., olfactory dysfunction lasting ≥30 days, implementation of OT as an intervention, availability of objective or subjective olfactory outcome measures).</p><p>The data were gathered in accordance with the PRISMA guidelines for systematic reviews. The dataset contains variables such as sample size, participants&#39; mean age, duration of olfactory dysfunction, type and duration of intervention, measurement tools used (e.g., UPSIT, Sniffin’ Sticks), follow-up period, and treatment outcomes (e.g., effect sizes, p-values).</p><p>The dataset is formatted as a table (Excel) to allow for secondary analysis or meta-analytic purposes. All data were extracted from peer-reviewed, English-language publications indexed in databases including PubMed, Scopus, Web of Science, and the Cochrane Library. No sensitive or personal data are included.</p>