• Data reference period
• Place of residence (NUTS I)
• Sex
• Age group
• Reason for the consumption of medicines

• 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.
• 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.

[Resident population having consumed medicines 2 weeks prior to the interview, with a prescription and acquired at pharmacy (by reason of consumption)/ Resident population having consumed medicines 2 weeks preceding to the interview, with a prescription and acquired at pharmacy]*100