ArticleRespirology (Carlton, Vic.)2023
Respiratory admissions before and during the COVID-19 pandemic with mediation analysis of air pollutants, mask-wearing and influenza rates.
Article in Respirology (Carlton, Vic.), 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 11 papers.
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Who cites it
11 citing papers in PubMed, 20 citations in OpenAlex.
- Changes in serious infection and mortality among patients with ANCA-associated vasculitis during the COVID-19 pandemic: an interrupted time-series analysis of J-CANVAS.EULAR rheumatology open · 2026Article
- The contributions of active and passive smoking to COPD-related mortality and DALYs in the context of COVID-19: Global Burden 2019-2021.Tobacco induced diseases · 2026Article
- Potential Impact of Biologic Use on Asthma-Related Hospitalization: An Epidemiological Study in Hong Kong.Canadian respiratory journal · 2026Article
- Change in Exacerbation Rate of Asthma Patients before and after COVID-19 Infection.Tuberculosis and respiratory diseases · 2025Article
- Dynamics of Absences Due to Respiratory Infections, Including COVID-19, Among Medical Staff in a Regional Pediatric Hospital.Healthcare (Basel, Switzerland) · 2025Article
- COPD Exacerbations, Air Pollutant Fluctuations, and Individual-Level Factors in the Pandemic Era.International journal of chronic obstructive pulmonary disease · 2025Article
- Chronic Obstructive Pulmonary Disease Mortality and Hospitalization during the COVID-19 Pandemic Compared with before the Pandemic: A Systematic Review and Meta-Analysis.Journal of personalized medicine · 2024Review
- A decreased impact of air pollution on hospital pneumonia visits during COVID-19 outbreak in northeastern Thailand.Journal of thoracic disease · 2024Article
- Changes in the national prevalence of asthma and coronavirus disease 2019 fatality: A population-based cross-sectional study.Annals of allergy, asthma & immunology : official publication of the American College of Allergy, Asthma, & Immunology · 2023Article
- Two years of the pandemic suppressed deaths from non-COVID-19 respiratory infections: A nationwide surveillance in Japan.Respirology (Carlton, Vic.) · 2023Article
- Bioinformatic analysis and preliminary validation of potential therapeutic targets for COVID-19 infection in asthma patients.Cell communication and signaling : CCS · 2022Article
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Authors and funding
8 authors at 1 institution in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
BACKGROUND AND
objectiveDecline in hospitalizations for various respiratory diseases has been reported during the COVID-19 pandemic, but what led to such an observation is uncertain.
methodsThis was a territory-wide, retrospective cohort study involving all public hospital admissions in Hong Kong from 1 January 2017 to 31 December 2020. Hospital admissions for respiratory diseases, including asthma, COPD and non-COVID pneumonia, were assessed. COVID-related admissions were excluded from this study. The time of commencement of the pandemic was taken from the fourth week of January 2020. The associations between air pollutant levels, influenza and mask-wearing rates with hospital admissions were assessed by mediation analyses.
resultsThere were altogether 19,485, 78,693 and 238,781 admissions for asthma, COPD and non-COVID pneumonia from January 2017 to December 2020. There was a marked reduction in hospital admissions of asthma, COPD and non-COVID pneumonia (37%, 36% and 12% decrease in average daily admissions, respectively) during the COVID-19 pandemic compared to before. Air pollutant levels and influenza rate were decreased while mask-wearing rate was increased. Collinearity of mask-wearing rates and pandemic year was observed. For COPD, NO
conclusionDuring the COVID-19 pandemic, a decrease in air pollutant levels and influenza rate had mediation effect on the reduction in hospitalizations of COPD and non-COVID pneumonia.
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