“…In 18 studies, the Quality of Life in Alzheimer’s Disease Scale (QOL-AD) was utilized [25], [28], [30], [41], [43], [44], [52], [62], [65], [67], [70], [73], [85], [90], [91], [125], [130], [136], and in 11 studies the Quality of Life in Late-Stage Dementia scale (QUALID) [27], [35], [41], [43], [61], [73], [85], [91], [104], [126], [136]. Additionally, the self-reported Dementia Quality of Life measure (DEMQoL) was employed in 4 studies [73], [92], [104], [112], the Dementia Quality of Life Instrument (DQoL) in 3 studies [41], [61], [93], the EQ-5D-5L in 3 studies [99], [104], [110]. Other measuring instruments were used only once in each case: Quality of Life (GQL8) [124], Quality of Life for People with Dementia (QUALIDEM ) [41], Quality of Life Alzheimer’s disease (QoL) scale [98], SF-36 quality of life instrument [103], Cantril QoL ladder [63], Carer-Qol-7D [112], EUROHIS-QoL-8 and EuroQoL 5 Dimension Questionnaire [91].…”