Menarche and father absence in a national probability sample.

Area of Science:

• Reproductive Health
• Child Development
• Sociology

Background:

• The timing of puberty is influenced by various factors, including psychosocial ones.
• Previous research suggests a link between father absence and earlier menarche, but mechanisms are unclear.

Purpose of the Study:

• To examine the relationship between father absence and the timing of menarche in a large national sample.
• To investigate body mass index and sibling presence as potential mediators or moderators of this relationship.

Main Methods:

• Analysis of data from the NATSAL 2000 survey, a national probability sample of over 5000 individuals in Great Britain.
• Statistical examination of the association between father absence during childhood and age of menarche.
• Assessment of body mass index and sibling number as potential mediators and moderators.

Main Results:

• Father absence during childhood was significantly associated with an earlier age of menarche.
• No evidence was found for body mass index mediating this relationship.
• Sibling presence did not moderate the association between father absence and menarche.
• Lower body mass index and a greater number of siblings were independently associated with later puberty.

Conclusions:

• Father absence is confirmed as a psychosocial factor influencing the timing of sexual maturation in adolescent girls.
• The presence of siblings may also play a role in the timing of puberty.
• Weight does not appear to be a mediating factor in the father absence-menarche relationship.