Descriptive statistics of the sixteen discovery studies and the replication study.

AGES: Age, Gene/Environment Susceptibility–Reykjavik Study; ASPS: Austrian Stroke Prevention Study; ERF: Erasmus Rucphen Family study; GHS: Gutenberg Health Study; H2000: Health 2000; HBCS: Helsinki Birth Cohort Study; HRS: Health and Retirement Study; KORA S4: Cooperative Health Research in the Region of Augsburg; NFBC1966: Northern Finland Birth Cohort 1966; NTR1: Netherlands Twin Register Cohort 1; NTR2: Netherlands Twin Register Cohort 2; RS-I: Rotterdam Study Baseline; RS-II: Rotterdam Study Extension of Baseline; RS-III: Rotterdam Study Young; SardiNIA: SardiNIA Study of Aging; SHIP: Study of Health in Pomerania; THISEAS: The Hellenic study of Interactions between SNPs & Eating in Atherosclerosis Susceptibility; TwinsUK: the UK Adult Twin Registry; YFS: the Cardiovascular Risk in Young Finns Study; STR: Swedish Twin Registry; Cases: number of participants that were at least once self-employed; Controls: number of participants that were not, and ideally never, self-employed; SD: standard deviation.
aThe number of male participants was insufficient for a male stratified analysis.