What does this source bring?
Additional 40 minutes of outdoor activity on school days was associated with lower incidence in an RCT: 30,4% vs. 39,5% over 3 years.
The primary outcome concerns the onset of myopia in children without it at baseline. It is not a measure of stopping existing progression.
CLAIM-OUTDOORScope of testing and verification
- The role of the record
- Source of the claim
- Population
- First-grade students, Guangzhou
- N
- 1903
- Geography
- China
- Observation (months)
- 36
- Comparator
- Normal timetable
- Result
- Additional 40 minutes of outdoor activity on school days was associated with lower incidence in an RCT: 30,4% vs. 39,5% over 3 years.
- Safety
- This record does not allow estimation of the frequency of rare adverse events.
- Device/structure
- Not applicable / not determined within the verified range
- Publisher of the publication
- American Medical Association (AMA)
- Financing
- Not determined within the proven range; see the declaration in full text.
- Conflicts of interest
- Not determined within the proven range. The absence of confirmation does not mean the absence of conflict.
- DOI
- 10.1001/like.2015.10803
- PMID
- 26372583
- What was checked
- Bibliographic metadata and abstract in Europe PMC / PubMed; Crossref metadata
- Date of verification
- 2026-09-09
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