Impact of housing allowance programme on the physical and mental health of households in South Korea.

The housing allowance programme's positive effects on health were not immediate but emerged over time following the 2015 reform.

• Data were drawn from the Korea Welfare Panel Study covering 2009-2021.
• A two-way fixed effects event study model was used to assess dynamic health impacts following the programme's significant reform in 2015.
• The analysis confirmed the absence of pre-existing differential trends, supporting the validity of the research design.
• Propensity score matching was employed to construct a comparable control group to overcome selection bias.

A statistically significant reduction in depression among household heads appeared approximately four years after the 2015 reform.

• Depression was measured among household heads using data from the Korea Welfare Panel Study (2009-2021).
• The mental health benefit was described as not immediate, emerging roughly four years post-reform.
• The quasi-experimental design with propensity score matching and two-way fixed effects was used to support causal inference.
• Pre-reform parallel trends were confirmed, supporting the validity of the depression finding.

A consistent and statistically significant improvement in physical health was observed from 2017 onwards.

• Physical health improvements were described as 'delayed but sustained' following the 2015 programme reform.
• The improvement in physical health began to emerge by 2017, approximately two years after the reform.
• Physical health outcomes were assessed for household heads using Korea Welfare Panel Study data spanning 2009-2021.
• The effect was characterized as 'consistent and statistically significant' from 2017 onwards.

Excessive housing costs significantly affect household financial stability and overall well-being, motivating the study of South Korea's housing allowance programme.

• The study focused on South Korea's housing allowance programme and its health impacts.
• The programme underwent a significant reform in 2015, which served as the policy event studied.
• The study population consisted of household heads identified through the Korea Welfare Panel Study.
• The findings emphasise 'the critical role of housing welfare policies in promoting health equity.'

The benefits of housing welfare policies may accumulate over time rather than manifesting immediately after implementation.

• Both physical and mental health improvements were delayed relative to the 2015 reform.
• The authors suggest 'the benefits of such policies may accumulate over time.'
• Physical health improvements emerged approximately two years post-reform (2017), while depression reductions appeared approximately four years post-reform.
• The findings were described as 'validated by a rigorous quasi-experimental design.'