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000137330 0247_ $$2doi$$a10.1017/S1041610214000052
000137330 0247_ $$2pmid$$apmid:24507554
000137330 0247_ $$2ISSN$$a1041-6102
000137330 0247_ $$2ISSN$$a1741-203X
000137330 037__ $$aDZNE-2020-03652
000137330 041__ $$aEnglish
000137330 082__ $$a610
000137330 1001_ $$0P:(DE-2719)2451281$$aDichter, Martin$$b0$$eFirst author
000137330 245__ $$aMeasuring the quality of life in mild to very severe dementia: testing the inter-rater and intra-rater reliability of the German version of the QUALIDEM.
000137330 260__ $$aCambridge$$bCambridge Univ. Press$$c2014
000137330 264_1 $$2Crossref$$3online$$bCambridge University Press (CUP)$$c2014-02-10
000137330 264_1 $$2Crossref$$3print$$bCambridge University Press (CUP)$$c2014-05-01
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000137330 520__ $$aQuality of life (Qol) is an increasingly used outcome measure in dementia research. The QUALIDEM is a dementia-specific and proxy-rated Qol instrument. We aimed to determine the inter-rater and intra-rater reliability in residents with dementia in German nursing homes.The QUALIDEM consists of nine subscales that were applied to a sample of 108 people with mild to severe dementia and six consecutive subscales that were applied to a sample of 53 people with very severe dementia. The proxy raters were 49 registered nurses and nursing assistants. Inter-rater and intra-rater reliability scores were calculated on the subscale and item level.None of the QUALIDEM subscales showed strong inter-rater reliability based on the single-measure Intra-Class Correlation Coefficient (ICC) for absolute agreement ≥ 0.70. Based on the average-measure ICC for four raters, eight subscales for people with mild to severe dementia (care relationship, positive affect, negative affect, restless tense behavior, social relations, social isolation, feeling at home and having something to do) and five subscales for very severe dementia (care relationship, negative affect, restless tense behavior, social relations and social isolation) yielded a strong inter-rater agreement (ICC: 0.72-0.86). All of the QUALIDEM subscales, regardless of dementia severity, showed strong intra-rater agreement. The ICC values ranged between 0.70 and 0.79 for people with mild to severe dementia and between 0.75 and 0.87 for people with very severe dementia.This study demonstrated insufficient inter-rater reliability and sufficient intra-rater reliability for all subscales of both versions of the German QUALIDEM. The degree of inter-rater reliability can be improved by collaborative Qol rating by more than one nurse. The development of a measurement manual with accurate item definitions and a standardized education program for proxy raters is recommended.
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000137330 650_2 $$2MeSH$$aAged
000137330 650_2 $$2MeSH$$aConsumer Behavior: statistics & numerical data
000137330 650_2 $$2MeSH$$aDementia: diagnosis
000137330 650_2 $$2MeSH$$aDementia: epidemiology
000137330 650_2 $$2MeSH$$aDementia: psychology
000137330 650_2 $$2MeSH$$aDementia: therapy
000137330 650_2 $$2MeSH$$aFemale
000137330 650_2 $$2MeSH$$aGeriatric Assessment: methods
000137330 650_2 $$2MeSH$$aGermany: epidemiology
000137330 650_2 $$2MeSH$$aHomes for the Aged: standards
000137330 650_2 $$2MeSH$$aHumans
000137330 650_2 $$2MeSH$$aLong-Term Care: methods
000137330 650_2 $$2MeSH$$aLong-Term Care: psychology
000137330 650_2 $$2MeSH$$aLong-Term Care: standards
000137330 650_2 $$2MeSH$$aMale
000137330 650_2 $$2MeSH$$aNursing Homes: standards
000137330 650_2 $$2MeSH$$aOutcome Assessment, Health Care
000137330 650_2 $$2MeSH$$aProxy: psychology
000137330 650_2 $$2MeSH$$aProxy: statistics & numerical data
000137330 650_2 $$2MeSH$$aPsychometrics: methods
000137330 650_2 $$2MeSH$$aQuality of Life
000137330 650_2 $$2MeSH$$aReproducibility of Results
000137330 650_2 $$2MeSH$$aSeverity of Illness Index
000137330 650_2 $$2MeSH$$aSurveys and Questionnaires
000137330 7001_ $$0P:(DE-2719)2451348$$aSchwab, Christian G G$$b1
000137330 7001_ $$0P:(DE-HGF)0$$aMeyer, Gabriele$$b2
000137330 7001_ $$0P:(DE-HGF)0$$aBartholomeyczik, Sabine$$b3
000137330 7001_ $$0P:(DE-2719)2700736$$aDortmann, Olga$$b4
000137330 7001_ $$0P:(DE-2719)2191593$$aHalek, Margareta$$b5$$eLast author
000137330 77318 $$2Crossref$$3journal-article$$a10.1017/s1041610214000052$$b : Cambridge University Press (CUP), 2014-02-10$$n5$$p825-836$$tInternational Psychogeriatrics$$v26$$x1041-6102$$y2014
000137330 773__ $$0PERI:(DE-600)2147136-8$$a10.1017/S1041610214000052$$gVol. 26, no. 5, p. 825 - 836$$n5$$p825-836$$q26:5<825 - 836$$tInternational psychogeriatrics$$v26$$x1041-6102$$y2014
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