• Data reference period (Month)
• Place of residence (Portugal)

• REFERENCE PERIOD:  The length of time for which data are collected, e.g. a specific day, month or year.
• 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.

Consumer Confidence Indicator is calculated according to the methodology of the EC - DG ECFIN, and corresponds to the arithmetic mean of the balances of the following questions:
- How has the financial situation of your household changed over the last 12 months? It has...1. + + got a lot better; 2. + got a little better; 3. = stayed the same; 4.- got a little worse; 5. - - got a lot worse; 6. N don't know.
- How do you expect the financial position of your household to change over the next 12 months? It will...1. + + get a lot better; 2. + get a little better; 3. = stay the same; 4. - get a little worse; 5. - - get a lot worse; 6. N don't know.
- How do you expect the general economic situation in this country to develop over the next 12 months? It will... 1. + + get a lot better; 2. + get a little better; 3. = stay the same; 4. - get a little worse; 5. - - get a lot worse; 6. N don't know.
- Compared to the past 12 months, do you expect to spend more or less money on major purchases (furniture, electrical/electronic devices, etc.) over the next 12 months? I will spend...1. + +much more; 2. + a little more; 3. - a little less; 4. - - much less; 5. N don't know