• Data reference period
• Place of residence (Portugal)

• 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).
• RESIDENT POPULATION:  The persons who regardless of the fact that at the moment of observation ' 0:00 a.m. of the reference day ' are present or absent in a given housing unit, this unit being where they live during most of the year with their family, or where they have all or most of their belongings.
• PER CAPITA CONSUMPTION:  Average consumption in kilograms or litres per inhabitant during the reference period, basing the calculation on the resident population in the area at mid-year or year end depending on the reference period in question.

(Total daily supply of calories by food product + Total daily supply of calories by alcoholic beverage)/ Population

NOTE: does not include non alcoholic beverages.