Variable search, one box

Search across 10 aging cohort studies (CHARLS · CHNS · CLHLS · CRELES · ELSA · HRS · KLoSA · LASI · MHAS · SHARE). The default view shows the 59 harmonized core variables with their real coverage — which cohorts, how many waves, how many person-waves. Toggle the switch below to full-text search all 519K raw variables. Click any card to copy its extraction code.