The Causal Effects of Education on Adult Health, Mortality and Income: Evidence from Mendelian Randomization and the Raising of the School Leaving Age
Neil Davies (),
Matt Dickson (),
George Davey Smith (),
Frank Windmeijer () and
Gerard J. van den Berg ()
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Neil Davies: University of Bristol
George Davey Smith: University of Bristol
Gerard J. van den Berg: University of Bristol
No 12192, IZA Discussion Papers from Institute of Labor Economics (IZA)
We compare estimates of the effects of education on health and health behaviour using two different instrumental variables in the UK Biobank data. One is based on a conventional natural experiment while the other, known as Mendelian randomization (MR), is based on genetic variants. The natural experiment exploits a compulsory schooling reform in the UK in 1972 which involved raising the minimum school leaving age (RoSLA). MR exploits perturbations of germline genetic variation associated with educational attainment, which occur at conception. It has been widely used in epidemiology and clinical sciences. Under monotonicity, each IV identifies a LATE, with potentially different sets of compliers. The RoSLA affected the amount of education for those at the lower end of the ability distribution whereas MR affects individuals across the entire distribution. We find that estimates using each approach are remarkably congruent for a wide range of health outcomes. Effect sizes of additional years of education thus seem to be similar across the education distribution. Our study corroborates the usefulness of MR as a source of instrumental variation in education.
Keywords: returns to education; health; instrumental variables; RoSLA; genomic confounding; LATE (search for similar items in EconPapers)
JEL-codes: H52 I12 I21 I28 (search for similar items in EconPapers)
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Working Paper: The Causal Effects of Education on Adult Health, Mortality and Income: Evidence from Mendelian Randomization and the Raising of the School Leaving Age (2019)
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