Diwell RA, et al. - Researchers, in this work, measured the prevalence of full syndromal delirium (FSD) and subsyndromal delirium (SSD). Furthermore, they assessed the effect that FSD, SSD and individual symptoms of delirium (from the Confusion Assessment Method-short version (s-CAM)) had on mortality rates. A dose-response relationship between mortality and delirium was observed. FSD had the greatest risk and SSD having intermediate risk. The observed associations were driven by the CAM items “acute-onset” and “disorganised thinking”. Clinically, this underscored the need to recognize individual symptoms of delirium.