To God above all things for allowing me to reach one more goal in my life project. To my family who has been my greatest pillar. To the State University of Guayaquil for having endorsed my professional training. To Dr. Hugo Behr, general manager of the Hospital Clínica San Francisco for allowing me to carry out my study at this distinguished hospital. I chose this topic because I know that it will provide much deeper information about the basal quality of life of patients in terms of dependence for basic and instrumental activities of daily living.