“…The studies differed in inclusion of established risk factors for CVDs. Eight studies adjusted their analyses for adult socio-economic status (SES) [19,21,24,26,[31][32][33]35]; seven for presence of risk factors in adulthood [17,19,20,24,26,32,33]; six for lifestyle (smoking, alcohol use or exercise) [19,20,[24][25][26]32]; and six for family history of CVD [19,20,22,26,32,35]. One study did not adjust for any form of confounding [34].…”