The course of dementia goes through different stages and during the moderate and advanced stages cognitive decline and functional deterioration are frequently accompanied by the so-called behavioural and psychological symptoms of dementia (BPSD), that put severe stress on the persons with dementia (PwD), on their families and on the health system. Worldwide consensus guidelines recommend non-pharmacological approaches to be first line.~The occupational therapist studies human activity as a therapeutic resource to prevent and treat physical and/or psychosocial difficulties, in order to improve the person's quality of life.~Subjects were not randomly assigned to different treatment groups (control group and experimental group); instead, consecutive sampling was chosen by assigning subjects based on an odd-and-even-numbered technique (odd subjects were assigned to the control group and even subjects to the experimental group). Both groups presented the same pathological, cultural, and sexual characteristics, and belonged to the same age group.
We followed a pretest-posttest non-equivalent control group experimental design study comparing two cohorts of patient with different types of dementia.~Approximately 250 patients will be screened to achieve 240 participants, divided in two cohorts (120 each), furthermore each cohorts was divided in other two groups (experimental group (60 each) and control group (60 each) the first one followed up by private centres in Spain endowed with Occupational Therapy and the second by public centres in the region of Modena.