Bridging the gap: development of a methodology for retrieving and harmonising body mass index (BMI) from population-level linked electronic health records | ...
Objective This study aims to develop a methodology to retrieve, harmonise and evaluate the completeness of national body mass index (BMI) data from linked electronic health record (EHR) sources to build a longitudinal research-ready data asset (RRDA). Design A longitudinal study of BMI records spanning 23 years (1 January 2000 to 31 December 2022) from four data sources. Setting The national BMI RRDA is created within the Secure Anonymised Information Linkage (Databank), encompassing the enti...| BMJ Open
