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Questionnaire module

Requirements

Organisations such as the United Nations recommend that information on age can be gathered either by asking for a person’s date of birth (day, month, year) or asking for a person’s age at their last birthday. We recommend asking for a person’s date of birth as it usually leads to an accurate answer, and it is easier to compare and combine with other kinds of data. 

In certain circumstances, asking for a person’s age (instead of their date of birth) may be more appropriate or even necessary. A good example is when we ask a representative or proxy for another person’s age, the representative may not know the other person’s date of birth, but is likely to know their age. 

The recommended questionnaire module asks for the date of birth in the following format: day–month–year.

Example

The questionnaire module below meets the requirements of the statistical standard. Other questionnaire modules may be in different formats but should still meet the requirements of this standard.

Questionnaire module for date of birth 

 Example question.

Example question.

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