A treated smoker is a smoker who undergoes at least one treatment session with support from a stop smoking advisor as part of their quit attempt.
Ysmygwr a gafodd driniaeth yw ysmygwr sy’n cael o leiaf un sesiwn driniaeth gyda chymorth gan gynghorydd rhoi’r gorau i ysmygu fel rhan o’i ymgais i roi’r gorau i ysmygu.