Summarising Quantitative Outcomes in Parental Mental Illness Research.

A quarter of all children grow up in a family where a parent experiences a mental illness (FaPMI). Research activity in this area is growing rapidly and it is now critical to better understand the extant knowledge in the field. This scoping review of quantitative FaPMI literature parallels a qualitative literature review and a series of Delphi studies with key stakeholders (e.g. lived experience and clinicians), that is part of a larger program of research to achieve consensus regarding the direction of FaPMI research; including making recommendations about outcomes and measures. The programme of research aims to promote and facilitate greater comparison and learning across studies and settings. Initially this scoping review summarises the quality and focus (e.g. country and sampling) of 50 quantitative studies from 2000 to 2023 and then classifies studies according to outcomes for parents, children and families. Six to eleven years were the most common child sample group and girls were slightly underrepresented (49/51) and parents were 88% mothers. Analogous parent and child outcomes were; mental illness/psychopathology, wellbeing, mental health literacy, trauma and stressful experiences, coping, help seeking/service need, within family relationships and supports, outside family relationships and supports. Additional outcomes for parents were; parenting skills, parent competence and parenting stress and for children in relation to their; cognitive functioning and caregiving. The family related outcomes were the within and outside family relationships and supports. Since 2000 there have been 136 different survey instruments employed with approximately 80% used in only one study. This suggests that the broader goals of the program of research are warranted as there is a need for less heterogeneity in measures used. Suggested areas for future research include a sampling focus on fathers, economic evaluations of programs, parent mental health literacy, trauma, genetics and integrating well-being concepts into research designs. Child research should focus on mental health literacy, the level and impact of caring responsibilities, assessing past trauma and the roles of close family and external supports.