This was a sub study conducted by Gallup. The LHA do not hold the data for this study.

All mothers whose first born child was the study member and who lived in the London area.

An estimated 784 mothers were asked for an interview; 29 refused and 6 interviews were not carried out because of family problems.

Gallup Poll interviewers visited mothers at home to ask about marriage, pregnancies and contraception and family size intentions since the birth of the cohort child.

Not known

• Family Size
• Contraception
• Religion

• Fertility questionnaire  - Face to face interview of mother by Gallup interviewer