Joan Madia

University of Oxford | OX · Department of Primary Care Health Sciences

Unexpected negative health shocks such as COVID-19 put pressure on households to provide more care to relatives and friends. This study uses data from the UK Household Longitudinal Study to investigate the impact of informal caregiving on mental health during the COVID-19 pandemic. Using a difference-in-differences analysis, we find that individual...

The negative health effects and mortality caused by the COVID-19 pandemic disproportionately fell upon older and disabled people. Protecting these vulnerable groups has been a key policy priority throughout the pandemic and related vaccination campaigns. Using data from the latest survey of the UK Household Longitudinal Study on COVID-19 we found t...

This study explores how researchers' analytical choices affect the reliability of scientific findings. Most discussions of reliability problems in science focus on systematic biases. We broaden the lens to emphasize the idiosyncrasy of conscious and unconscious decisions that researchers make during data analysis. We coordinated 161 researchers in...

This study analyses the changes in mental health in the UK that occurred as a result of the 2016 referendum on UK membership of the EU (Brexit). Using the Household Longitudinal Study, we compare the levels of self-reported mental distress, mental functioning and life satisfaction be-fore and after the referendum. A linear fixed effects analysis re...

Previous evidence has suggested a strong association between school exclusion and mental health. However, as mental health risks are themselves related to the risk of experiencing a school exclusion, it has been challenging to determine the extent to which school exclusion impacts later mental health, as opposed to reflecting a marker for pre-exist...

Background: Previous research suggests that school exclusion during childhood is a precursor to social exclusion in adulthood. Past literature on the consequences of school exclusion is, however, scarce and mainly focused on short-term outcomes such as educational attainment, delinquency, and mental health in early adolescence. Moreover, this evid...

Pension adequacy is gaining importance as old-age poverty remains a pressing problem. In many advanced welfare states, the population is ageing rapidly and recent pension reforms have led to cuts in public pension provision. There are, however, few comparative longitudinal studies on the relationship between pension generosity and old-age poverty....

The paper reports findings from a crowdsourced replication. Eighty-four replicator teams attempted to verify results reported in an original study by running the same models with the same data. The replication involved an experimental condition. A “transparent” group received the original study and code, and an “opaque” group received the same unde...

Background. Previous research suggests that school exclusion during childhood is a precursor to social exclusion in adulthood. Past literature on the consequences of school exclusion is, however, scarce and mainly focused on short term outcomes such as educational attainment, delinquency, and mental health in early adolescence. Moreover, this evide...

Findings from 162 researchers in 73 teams testing the same hypothesis with the same data reveal a universe of unique analytical possibilities leading to a broad range of results and conclusions. Surprisingly, the outcome variance mostly cannot be explained by variations in researchers’ modeling decisions or prior beliefs. Each of the 1,261 test mod...

This paper provides a comparative analysis of the drivers of English Language Competence (ELC) in a representative sample of European adolescents. School factors – such as English instruction time and English onset – are found to play an important role, especially in countries whose official languages are more distant from English. However, schools...

In an era of mass migration, social scientists, populist parties and social movements raise concerns over the future of immigration-destination societies. What impacts does this have on policy and social solidarity? Comparative cross-national research, relying mostly on secondary data, has findings in different directions. There is a threat of sele...

We investigate the nexus between intermarriage and immigrant integration by analyzing mixed-parentage children’s educational outcomes. We use Italian Labor Force Survey data to compare the upper secondary school participation of children of different types of mixed unions with that of children of two native and two migrant couples. Our results show...