“…Studies of ED length of stay have identified both extrinsic and intrinsic factors. Two broad extrinsic factors, which are not under the control of the ED, have been identified (Jarvis, 2016): increased attendance/ departmental occupancy (Bergs et al, 2014) and bed availability or capacity in wards to which patients may be discharged (Mahsanlar et al, 2014). Intrinsic factors include patient characteristics, for example older patients (Hosseininejad et al, 2017), Ross, A. J., Murrells, T., Kirby, T., Jaye, P., & Anderson, J. E. (2019).…”