Prevalence (%) of tobacco exposure (current own smoking, maternal and paternal smoking during pregnancy and indoor tobacco smoke exposure as a child) in 295 17–20 year-old men from the general population, Malmö, Sweden, 2008–2010.

Abbreviations: MBR, medical birth register; NA, information not available.aNumber of cigarettes were below one per day in three men, missing in three men and reported as one per day in one man that reported himself as a non-smoker;bMissing in eight men;cMissing in twelve men;dMissing in 17 men;eMissing in four men.