Spanish translation, retranslation, and content validation of the Quality of Life in Alzheimer's Disease scale in patients with Alzheimer's dementia.

Introduction: It is estimated that by the year 2050, persons over 60 will account for 22% of the world population. Consequently, the incidence and prevalence of Alzheimer's disease will increase correspondingly. One of the pillars of the treatment of this condition is to improve the quality of life.