Depression in mothers with intellectual disabilities and borderline intellectual functioning: A longitudinal study

Area of Science:

• Psychiatry
• Developmental Psychology
• Public Health

Background:

• Parents with intellectual disabilities (ID) face significant economic and social marginalization.
• This marginalization increases vulnerability to adverse mental health outcomes, particularly depression.
• Longitudinal research is essential to understand mental health trajectories in parents with ID.

Purpose of the Study:

• To examine the rates and risk factors of depression among mothers with ID and borderline intellectual functioning (IF).
• To understand the developmental course of depression in this population over 15 years of parenthood.
• To identify key variables influencing maternal depression in mothers with ID and borderline IF.

Main Methods:

• Utilized longitudinal data from the Future of Families and Child Wellbeing Study (FFCWS).
• Employed multilevel mixed-effects logistic regression analysis.
• Analyzed a sample of 435 mothers with ID and borderline IF across Years 1-15.

Main Results:

• Consistently elevated rates of depression were observed in mothers with ID and borderline IF.
• The highest risk for depression occurred when the child was 3 years old, even after adjusting for covariates.
• Factors associated with lower depression odds included being married/partnered and higher social support.
• Higher parenting stress and material hardship were linked to increased depression odds.

Conclusions:

• Maternal depression rates are consistently high for mothers with ID and borderline IF, necessitating interventions throughout parenthood.
• Developmentally appropriate supports are particularly critical during early childhood.
• Addressing economic and social marginalization is key to improving mental health outcomes for this vulnerable group.