> This study looks only at Swedish men who served in the military, which as the authors observe may well introduce a bias. Paper: We subset on men who took a c

> This study looks only at Swedish men who served in the military, which as the authors observe may well introduce a bias. Paper: We subset on men who took a compulsory conscription test at age 18–19 during 1971–1977 or 1980–1999, years in which ≥90 per cent of each cohort enlisted (94 per cent on average). That said, I think Sweden is a bit special because of it's extreme taxation levels even for medium high income. See: https://news.ycombinator.com/item?id=34656070 https://news.ycombinator.com/item?id=34656070