Optimising measurement of information on the context of alcohol consumption within the Drink Less App amongst people drinking at increasing and higher risk levels: a mixed-methods usability study

Please see the full protocol on Open Science Framework: https://osf.io/h8tgw The human participant research protocol was approved by University College London’s (23875/004) and University of Sheffield’s ethics committees (786). File(s) are available to researchers on request in line with ethics approval.