Spain will have the most aged population in the world by 2040, currently ranked third which means that an acceleration of the population ageing process is taking place (Christensen et al., 2009). These individuals are especially vulnerable and fragile, requiring highly complex care as well as extensive sociosanitary resources (Grover & Joshi, 2015;Mokraoui et al., 2016). Moreover, over recent years, there has been an increased prevalence of older patients with chronic illnesses, complex needs, associated polypharmacy and who are at a high risk of functional and cognitive decline. Consequently, the number of hospital admissions and re-admissions has steadily been on the rise (Kinney