STS Hospital-level stroke surveillance in Chilumba, Malawi: providing tools for evaluating interventions in hypertension and stroke in sub-Saharan Africa Karonga
If Q 13.1(resmoke) :Have you ever smoked cigarettes regularly (i.e. at least weekly)?=Formerly (stopped more than 6 months ago) or Current (in last 6 months), how old were you when started smoking?