3 days after quitting cigarettes Timeline of Lung Recovery Smoking The day you quit is
Description
Kresty, L
doi:10.1155/2021/6632379 32
Others use them in a more scheduled way throughout the day

Correlation of Air Pollution and Prevalence of Acute Pulmonary Embolism in Northern Thailand

The ROS is a single summary of the effect of smoking on the outcome, with higher positive ROSs corresponding to stronger and more consistent evidence and a higher average effect size of smoking and a negative ROS, suggesting that, based on the available evidence, there is no significant effect of smoking on the outcome after accounting for between-study heterogeneity
