• Data reference period
• Place of residence (Portugal)
• Sex
• Age group

• ACTIVITY RATE (population aged 15 years old and over):  rate that defines the relation between the active population (labour force) and the working age population (population aged 15 years old and over).
• 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:  Period to which the information refers and which may be a specific day or a time interval (month, fiscal year, calendar year, among others).
• AGE GROUP:  The age interval in years to which a person belongs at the time of reference.
• SEX:  Biological and physiological characteristics that define men and women.

(Active population aged between 20 and 64 years old/ Resident population aged betwenn 20 and 64 years old)*100