Codes and Frequencies
For female sample persons aged 18 and older who have ever had a live birth, BIRTHAG reports the person's age when her first child was born. Please see Comparability and Universe tabs for information on changes in the wording and universe between samples.
- 1987: Half of female sample adults age 18+ (excluded from CAEP supplement) who have ever given birth to liveborn infant.
- 2000; 2005; 2010; 2015: Female sample adults age 18+ who ever had a live birth.
- 1987, 2000, 2005, 2010, 2015
- 1987, 2000, 2005, 2010, 2015 : SAMPWEIGHT