Asthma hospitalisations drop 41% in improved air of lockdown, Oxford study finds

(I'm OP of this submission, but otherwise unrelated to the story so can't answer questions on it.)

The article also contains a link to the source study, "Impacts of ambient air quality on acute asthma hospital admissions during the COVID-19 pandemic in Oxford City, UK: a time-series study" - https://bmjopen.bmj.com/content/14/1/e070704

Which includes:

"STRENGTHS AND LIMITATIONS OF THIS STUDY

- This study investigated the association between ambient air pollution exposure and risk of admission to hospital for asthma.

- The study includes an at-risk population of >800,000 person-years.

- Associations were evaluated using single and multipollutant models.

- Causation cannot be inferred from this observational study.

- A single city study may limit wider generalisation of findings."

(And I didn't exactly use the original article title despite it being a perfect 80chars, to be able to include the 41% figure - from "Asthma emergency admissions plunged as lockdown improved air, Oxford study finds".)