Erazo, LeninIllescas Peña, Lourdes EugeniaCedillo Orellana, Irene Priscila2022-01-312022-01-312021978-303071502-11865-0929https://reader.elsevier.com/reader/sd/pii/S1877050917317647?token=D6465345A2D7EF08A39D1F1735729F3652CA1E323C4F224644ABD65A5199FE22E9E08C4D9F9C6DBC10D59069C7005713&originRegion=us-east-1&originCreation=20220131154448Ambient Assisted Living (AAL) aims to improve the people’s quality of life, especially vulnerable groups, with the support of information technologies, increasing the autonomy, self-confidence and mobility of the users in their daily activities. Hence, it is essential to know the end-user's opinion about the perceived quality when using an AAL system in terms of the degree of satisfaction of their real needs and achieved objectives. However, since AAL is a relatively new domain, existing quality models are limited, with an incomplete set of attributes and metrics. Therefore, this research proposes a quality in use model for AAL systems focused on the followings characteristics: effectiveness, efficiency, satisfaction, freedom from risk, and context coverage; and their corresponding metrics adjusted to the AAL domain. Finally, the proposed model has been applied as a guideline during the evaluation of an intelligent pillbox. The results of this application have proven that this model is a valuable tool for evaluating the results and effects of using an AAL system from the perspectives of either a primary user (e.g., elderly people, people with special needs, patients) or a secondary user (e.g., family, caregivers). Consequently, it identifies essential aspects that contribute to improving the quality of those systems.es-ESAALAmbient assisted livingEvaluationMeasurementMetricQuality in useQuality modelQuality of context