Figure 1: Datasets, their relevant extraction dates and their linkage used in the Electronic Longitudinal Alcohol Study in Communities (ELAStiC) project.

Note: WDSD: Welsh Demographic Dataset; PEDW: Patient Episode Database for Wales; WLGP: Welsh Longitudinal General Practice (data); RALF: Residential Anonymised Linking Field; WECC: Wales Electronic Cohort for Children; E-CATALyST: Caerphilly Health and Social Needs Electronic Cohort; ADDE: Annual District Death Extract; WHSD: Welsh Health Survey Dataset