00852nas a2200325   4500000000100000000000100001000000100002008004100003653000900044653001000053653001900063653003100082653001100113653002600124653001700150653002400167653003000191653002600221653002300247653002000270653002600290100001300316700001700329700001800346245011900364250001500483300000700498490000700505020001400512       2022                            d10aBias10aChild10aCohort Studies10a*Electronic Health Records10aHumans10aRetrospective Studies10aTime Factors10aBias (epidemiology)10aElectronic Health Records10aepidemiologic methods10aImmortal time bias10aLife expectancy10aObservational studies1 aF. Tyrer1 aK. Bhaskaran1 aM. Rutherford00aImmortal time bias for life-long conditions in retrospective observational studies using electronic health records  a2022/03/31  a860 v22  a1471-2288