Menstrual cycle features in mothers and daughters in the Avon Longitudinal Study of Parents and Children (ALSPAC).

Problematic menstrual cycle features, including irregular periods, severe pain, heavy bleeding, absence of periods, frequent or infrequent cycles, and premenstrual symptoms, are experienced by high proportions of females and can have substantial impacts on their health and well-being. However, research aimed at identifying causes and risk factors associated with such menstrual cycle features is sparse and limited. This data note describes prospective, longitudinal data collected in a UK birth cohort, the Avon Longitudinal Study of Parents and Children (ALSPAC), on menstrual cycle features, which can be utilised to address the research gaps in this area. Data were collected across 21 timepoints (between the average age of 28.6 and 57.7 years) in mothers (G0) and 20 timepoints (between the average age of 8 and 24 years) in index daughters (G1) between 1991 and 2020. This data note details all available variables, proposes methods to derive comparable variables across data collection timepoints, and discusses important limitations specific to each menstrual cycle feature. Also, the data note identifies broader issues for researchers to consider when utilising the menstrual cycle feature data, such as hormonal contraception, pregnancy, breastfeeding, and menopause, as well as missing data and misclassification.

The relationship between maternal psychopathology and offspring incontinence and constipation at school age: A prospective cohort study.

BACKGROUND: There is evidence for an association between maternal psychopathology and offspring incontinence and constipation, but it is unclear if there is a critical/sensitive period of exposure to maternal depression and/or anxiety in the antenatal or postnatal period. METHODS: Mothers from the Avon Longitudinal Study of Parents and Children provided data on their depression and anxiety (antenatal and postnatal) and their child's urinary and faecal incontinence and constipation at age 7 (6489 participants). We used multivariable logistic regression to examine evidence for independent effects of maternal depression/anxiety on offspring incontinence/constipation and to investigate if there was a critical/sensitive period of exposure. We examined evidence for causal intra-uterine effects using a negative control design. RESULTS: Postnatal maternal psychopathology was associated with an increased risk of offspring incontinence and constipation (e.g. postnatal anxiety and daytime wetting OR: 1.53; 95 % CI: 1.21-1.94). Data were consistent with a postnatal critical period model and there was evidence for an independent effect of maternal anxiety. Antenatal maternal psychopathology was associated with offspring constipation (e.g. antenatal anxiety OR: 1.57; 95 % CI: 1.25-1.98), but there was no evidence for a causal intra-uterine effect. LIMITATIONS: Attrition and maternal reports without use of diagnostic criteria for incontinence/constipation are potential limitations. CONCLUSIONS: Children exposed to maternal postnatal psychopathology had a greater risk of incontinence/constipation, and maternal anxiety had stronger associations than depression. Health professionals should be vigilant to effects of maternal psychopathology on child development. Identification of mechanisms linking maternal psychopathology to child incontinence/constipation is required to inform evidence-based support.