Supplemental Material1 - Supplemental material for Correcting for non-participation bias in health surveys using record-linkage, synthetic observations and pattern mixture modelling GrayLinsay GormanEmma R WhiteIan KatikireddiS Vittal McCartneyGerry RutherfordLisa H LeylandAlastair 2019 <p>Supplemental material, Supplemental Material1 for Correcting for non-participation bias in health surveys using record-linkage, synthetic observations and pattern mixture modelling by Linsay Gray, Emma Gorman, Ian R White, S Vittal Katikireddi, Gerry McCartney, Lisa Rutherford and Alastair H Leyland in Statistical Methods in Medical Research</p>