Patients presenting to acute care settings with nonspecific complaints (NSCs) are at high risk of adverse outcomes [1, 2] and pose diagnostic and prognostic challenges [3]. The majority of these patients suffers from acute and serious conditions [4]. Due to the prevalence of chronic disease [5], nonorganic or functional problems [6], therapy induced conditions [7], or acute complications in chronic conditions, several distinct trajectories of survival may be observed. Allocating NSCs patients into predefined groups may be used in clinical practice, if the framework can simply, but reliably, categorise NSCs with different trajectories.
