The impact of parental mental health and socioeconomic position on child preschool health

Many children, approximately one out of four to five, live in families with parental mental health problems. Knowledge on the impact of other mental health problems than depression or anxiety is sparse as well as the impact of the father. Therefore, we aimed to examine the effect of maternal and paternal mental health on child respiratory illness.A population-based birth cohort study was conducted including all Danish children born from 2000-2012 using the Danish nationwide registers. Two follow-up periods were created: From age 1-2 and age 3-5. Mental health was categorised in three: No mental health problems, minor mental health condition if handled in solely primary healthcare; and moderate-severe if handled in psychiatric healthcare settings. Child respiratory illness was identified by prescribed medication or hospital-based diagnoses. Incidence rate ratios (IRR) were calculated using Poisson regression analysis.The analyses included 810,243 children. 26\7\10-12\.7\. Adjusted IRRs revealed higher risks for children of mothers with minor (IRR 1.32 (CI95\.30-1.34)) and moderate-severe mental health conditions (IRR 1.48 (CI95\.44-1.51)). For paternal mental health, the IRRs were 1.14 (CI95\.12-1.16) for minor and IRR 1.14 (CI95\.11-1.17) for moderate-severe mental health conditions. The IRRs were a little higher for the children aged 1-2 years compared to 3-5-years.Children of parents with mental health conditions were at greater risk of respiratory illness. This was evident for the mental health of both parents, most pronounced for the mother. Not only moderate-severe, but also minor mental health conditions increased the risk of respiratory illness.