https://www.selleckchem.com/pr....oducts/ap-3-a4-enobl
The cumulative effects at lag0-21 increased with the intensities and the durations of cold spells. Under the optimal definition, the most significant single-day relative risk (RR) was found on the days of cold spells (lag with an RR of 1.042 (95% CI 1.013 to 1.072), and the CRR at lag0-21 was 1.394 (95% CI 1.193 to 1.63. The elderly (aged ≥65) were more vulnerable to the effects of cold spells on AECOPD hospitalisations. Cold spells are associated with increased AECOPD hospitalisations in Beijing, with the cumulative effect