CIPHER extension

The proposed research project has two components: Phase A: Phase A will comprise preliminary work to establish the key surgical steps that may influence parastomal hernia (PSH) formation and test patient reported outcome measures (PROs) for symptomatic PSH to use in Phase B. Phase B: Phase B will be the main multicentre pragmatic cohort study. It will identify key technical surgical factors, defined during Phase A, that are associated with PSH.