SynthesisBMJ open2020
Short-term exposure to pollen and the risk of allergic and asthmatic manifestations: a systematic review and meta-analysis.
Synthesis in BMJ open, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 29 papers.
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
29 citing papers in PubMed.
- Residential greenness and atopic dermatitis in Japanese children: Findings from the TMM BirThree cohort study.Pediatric allergy and immunology : official publication of the European Society of Pediatric Allergy and Immunology · 2026Article
- Effect of initiation treatment timing on efficacy ofThe World Allergy Organization journal · 2026Article
- Five years of national airborne pollen monitoring in South Africa: biome-specific calendars to inform allergy diagnosis and prevention.Aerobiologia · 2026Article
- Urban greenspace under a changing climate: Benefit or harm for allergies and respiratory health?Environmental epidemiology (Philadelphia, Pa.) · 2025Review
- Reconstructing individual-level exposures in cohort analyses of environmental risks: an example with the UK Biobank.Journal of exposure science & environmental epidemiology · 2024Review
- Pollen exposures in pregnancy and early life are associated with childhood asthma incidence.The World Allergy Organization journal · 2024Article
- Acute exposure to pollen and airway inflammation in adolescents.Pediatric pulmonology · 2024Article
- Article
- Early life exposures of childhood asthma and allergies-an epidemiologic perspective.Frontiers in allergy · 2024Article
- Adjuvant-independent airway sensitization and infection mouse models leading to allergic asthma.Frontiers in allergy · 2024Review
- Activities and concentration of alpha-1 antitrypsin and cystatin C in serum from patients with house dust mite asthma.Asia Pacific allergy · 2023Article
- Dissecting Airborne Allergens.Journal of clinical medicine · 2023Review
- Neighborhood violence and socioeconomic deprivation influence associations between acute air pollution and temperature on childhood asthma in New York city.Environmental research · 2023Article
- The Impact of Climate Change on Asthma and Allergic-Immunologic Disease.Current allergy and asthma reports · 2023Review
- Pollen and asthma morbidity in Atlanta: A 26-year time-series study.Environment international · 2023Article
- Adoptive transfer of allergen-expressing B cells prevents IgE-mediated allergy.Frontiers in immunology · 2023Article
- Pollen exposure is associated with risk of respiratory symptoms during the first year of life.Allergy · 2022Article
- Article
- Thunderstorms, Pollen, and Severe Asthma in a Midwestern, USA, Urban Environment, 2007-2018.Epidemiology (Cambridge, Mass.) · 2022Article
- Real-time automatic detection of starch particles in ambient air.Agricultural and forest meteorology · 2022Article
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
6 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
backgroundSeveral studies have assessed effects of short-term exposure to pollen on allergic and asthmatic manifestations. The evidence is inconclusive, and no meta-analysis has been published.
objectiveTo synthesise the evidence on the relations between short-term pollen exposure and the risk of allergic and asthmatic manifestations.
methodsWe performed a systematic literature search of PubMed and Scopus databases up to the end of August 2018. In addition, we reviewed the reference lists of relevant articles. Two authors independently evaluated the eligible articles and extracted relevant information in a structured form. We calculated summary effect estimates (EE) based on the study-specific ORs and regression coefficients (β) by applying both fixed-effects and random-effects models.
results26 studies met the a priori eligibility criteria, and 12 of them provided sufficient information for the meta-analysis. The summary EE related to 10 grains per m³ increase in pollen exposure showed an 1% increase (EE 1.01, 95% CI 1.00 to 1.02) in the risk of lower respiratory symptoms and a 2% increase (EE 1.02, 95% CI 1.01 to 1.03) in the risk of any allergic or asthmatic symptom. Correspondingly, the risk of upper respiratory symptoms and ocular symptoms increased 7% (EE 1.07, 95% CI 1.04 to 1.09) and 11% (EE 1.11, 95% CI 1.05 to 1.17), respectively, in relation to such pollen exposure. Short-term exposure to pollen did not show any significant effect on daily lung function levels.
conclusionOur results provide new evidence that short-term pollen exposure significantly increases the risks of allergic and asthmatic symptoms.
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.