Impact of reducing childhood poverty on social vulnerability in young adulthood: a simulation study based on nationwide life-course data
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Background
UN Sustainable Development Goal 1.2 targets a 50% reduction in childhood poverty by 2030. This study explores the potential impact of such a reduction in Denmark on (1) the distribution of individuals over trajectories of childhood adversity and (2) social vulnerability (mental health, crime and social benefits) in young adulthood.
Methods
We included 607,308 individuals born in Denmark (1987-1996). Childhood poverty was defined as an annual equivalized disposable income below 50% of the national median. Using group-based multi-trajectory modeling, five childhood adversity groups were previously identified based on 12 adversities (including poverty) over three dimensions from ages 0–15. A 50% annual poverty reduction was simulated, and individuals were reassigned to adversity groups. Social vulnerability (ages 16-24) was measured using three binary indicators: mental health problems, crime conviction, and long-term social benefit use. Using G-computation, we estimated how the reassignment to adversity groups affected each outcome.
Findings
Of those affected by the simulated poverty reduction, 32% changed adversity group. This resulted in a modest decrease in social vulnerability among these individuals: 11.6 fewer crime convictions (CI95%: 10.9–12.2), 12.6 fewer long-term benefit recipients (CI95%: 12.0–13.2), and 7.0 fewer mental health cases (CI95%: 6.2–7.8) per 1,000 individuals. Population-wide risk differences were smaller (1–2 cases per 1,000 individuals).
Interpretation
Reducing childhood poverty may lower social vulnerability in young adulthood, but it needs to be integrated with broader, multifaceted approaches that support children facing multiple, clustered adversities while growing up and as they transition to adulthood.
Funding
European Research Council (ERC) (Grant agreement No. 101124807). The Copenhagen Health Complexity center is funded by TrygFonden.
