• Data reference period
• Place of residence (NUTS - 2013)
• Sex

• RESIDENT POPULATION:  Set of persons who, regardless of being present or absent in a given housing unit at the moment of observation, have lived in the place of their usual residence for a continuous period of 12 months prior to the moment of observation, or have arrived to the place of their usual residence during the period of 12 months prior to the moment of observation, with the purpose of living there for a year, at least.
• REFERENCE PERIOD:  The length of time for which data are collected, e.g. a specific day, month or year.
• AGE GROUP:  The age interval in years to which a person belongs at the time of reference .

(Resident population aged 15 and and more years old who smokes/ Resident population aged 15 and over)*100