Why the study?
Smoking cessation is recommended for stroke prevention, but the impact of smoking status on stroke recurrence has not been well studied.
Does smoking status (persistent smoking, quitting, or former smoking) affect the risk of fatal or nonfatal recurrent stroke in patients with first-ever stroke compared to nonsmokers?
Does smoking status (persistent smoking, quitting, or former smoking) affect the risk of fatal or nonfatal recurrent stroke in patients with first-ever stroke compared to nonsmokers?
Persistent smoking after an initial stroke significantly increases the risk of stroke recurrence in a dose-dependent manner.
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Persistent smoking after stroke was associated with higher recurrence risk; extends observational data but leaves open need for RCTs.
Chen et al. (2019) studied this question.