Premium
Reliability and validity of a Japanese quality of life scale for the elderly with dementia
Author(s) -
YamamotoMitani Noriko,
Abe Toshiko,
Yamada Yukari,
Yamazato Chieko,
Amemiya Hiroko,
Sugishita Chieko,
Kamata Keiko
Publication year - 2000
Publication title -
nursing and health sciences
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.563
H-Index - 47
eISSN - 1442-2018
pISSN - 1441-0745
DOI - 10.1046/j.1442-2018.2000.00038.x
Subject(s) - reliability (semiconductor) , psychology , mood , scale (ratio) , inter rater reliability , feeling , quality of life (healthcare) , dementia , validity , construct validity , rating scale , clinical psychology , psychometrics , social psychology , developmental psychology , medicine , psychotherapist , power (physics) , physics , disease , pathology , quantum mechanics
This paper examines reliability and validity of an instrument measuring the quality of life of elderly Japanese people with dementia. The instrument is a translation of an American instrument. The instrument has 48 items with binary answer format over five domains: ‘social interaction’, ‘awareness of self’, ‘enjoyment of activities’, ‘feelings and mood’, and ‘response to surroundings’. Altogether, 321 elderly in various facilities/services in Japan were evaluated by their formal caregivers. Factor analysis supported the domain of ‘enjoyment of activities’, but the domains of ‘awareness of self’ and ‘response to surroundings’ were statistically overlapped. The domains of ‘social interaction’ and ‘feeling and mood’ were not supported. Test–retest reliability was generally satisfactory except for the domain of ‘response to surroundings’. Interrater reliability was relatively low for domain scores but the total score was acceptable. Thus, the instrument showed moderate reliability and validity and further improvement is needed.