Age of Menarche and Psychosocial Outcomes in a New Zealand Birth Cohort

• Published in: Journal of the American Academy of Child and Adolescent Psychiatry Vol. 50; no. 2; pp. 132 - 140.e5
• Main Authors: Boden, Joseph M., Ph.D, Fergusson, David M., Ph.D, Horwood, L. John, M.Sc
• Format: Journal Article
• Language: English
• Published: Maryland Heights, MO Elsevier Inc 01.02.2011; Elsevier; Elsevier BV
• Subjects: Adolescent; Age; Age Differences; Age Factors; age of menarche; Anxiety Disorders; Anxiety-Depression; Behavior Disorders; Biological and medical sciences; Child; Child clinical studies; Childbirth; Children & youth; Cohort Analysis; conduct disorder; Correlation; Crime - statistics & numerical data; Criminals; Early Parenthood; Educational Status; Employment; Family Characteristics; Female; Females; Foreign Countries; Health Behavior; Humans; Longitudinal Studies; longitudinal study; Medical sciences; Menarche; Menstruation; Mental Health; New Zealand; New Zealand - epidemiology; Outcome Measures; Pediatrics; Physiology; Predictor Variables; Pregnancy; Psychiatry; Psychology. Psychoanalysis. Psychiatry; Psychopathology. Psychiatry; Regression Analysis; Risk; Sexual Behavior; Sexual behaviour; Sexuality; Sexually transmitted diseases; Social Behavior; Social psychology; Studies; Teenage pregnancy; New Zealand; Oceania; longitudinal study; conduct disorder; mental health; age of menarche; pregnancy; Pregnancy; Follow up study; Mental health; Menarche; Conduct disorder; Birth cohort; Psychosocial factor; Social behavior disorder; Age
• ISSN: 0890-8567; 1527-5418
• DOI: 10.1016/j.jaac.2010.11.007

Objective This study examined associations between age of menarche and psychosocial outcomes in early adulthood, including sexual behavior, mental health, criminal behavior, and education/employment, to identify the possible causal role of earlier age of menarche in increasing risks of adverse outcomes. Method Data were gathered from 497 female members of a New Zealand longitudinal birth cohort. Outcome measures (to age 18 years) were as follows: pregnancy; sexually transmitted infection (STI); DSM-IV major depression, anxiety disorder, alcohol dependence and conduct disorder/ASPD; self-reported crime; convictions; leaving school without qualifications; and unemployment. Associations between age of menarche and outcome measures were then adjusted for confounding factors spanning family background, family functioning, and individual factors. Additional analyses examined sexual behavior outcomes to age 21, and all other outcomes to age 30 years. Results Analyses showed that sexual behavior outcomes (pregnancy, STI) were significantly associated with age of menarche, even after controlling for confounding factors. Anxiety disorder was marginally ( p < .10) associated with age of menarche. In addition, pregnancy during ages 18 to 21 years was significantly associated with age of menarche. There were no significant associations between age of menarche and outcomes at any other age (to age 30). Conclusions The study showed that females reaching menarche at an earlier age were at increased risk of early pregnancy, and STI by age 18. The present study found little evidence to suggest that age of menarche was related to mental health, criminal behavior, or education/employment outcomes for this cohort.