1 Centre for Healthcare Modelling & Informatics, School of Computing, University of Portsmouth, Portsmouth, United Kingdom Centre of Postgraduate Medical Research & Education, Faculty of Health and Social Sciences, University of Bournemouth, Bournemouth, United Kingdom Centre for Healthcare Modelling & Informatics, University of Portsmouth, Portsmouth, United Kingdom Research & Innovation Department, Portsmouth Hospitals NHS Trust, Portsmouth, United Kingdom Acute Medical Unit, Hampshire Hospitals NHS Foundation Trust, Winchester, United Kingdom Acute Medical Unit, Portsmouth Hospitals NHS Trust, Portsmouth, United Kingdom.