Jonas Hylla1, Christian G G Schwab2,3, Michael Isfort1,4, Margareta Halek2,3, Martin N Dichter2,3. 1. 1 Katholische Hochschule Nordrhein-Westfalen (KatHO NRW), Abteilung Köln. 2. 2 Deutsches Zentrum für Neurodegenerative Erkrankungen (DZNE), Witten. 3. 3 Department für Pflegewissenschaft, Fakultät für Gesundheit, Universität Witten/Herdecke (UW/H), Witten. 4. 4 Deutsches Institut für angewandte Pflegeforschung (dip), Köln.
Abstract
Background: The maintenance and promotion of Quality of Life (QoL) of people with dementia is a major outcome in intervention studies and health care. The Quality of Life Alzheimer's Disease (QoL-AD) is an internationally recommended QoL measurement also available in German language. Until now, only a few results on the psychometric properties of the German QoL-AD were available. Objective: Evaluation of internal consistency and construct validity of the QoL-AD proxy. Method: A principal component analysis (secondary data analysis) of the 13 QoL-AD items was carried out based on the total sample of 234 people with dementia from nine nursing homes in Germany. Subsequently, the internal consistency of the identified factors was examined using Cronbach's alpha. Results: Two factors physical and mental health and social network were determined. Both factors explain 53 % of the total variance. The stability of both factors was validated in two sensitivity analyses. The internal consistency is good for both factors with a Cronbach's alpha of 0.88 (physical and mental health) and 0.75 (social network). Conclusion: The QoL-AD proxy allows the assessment of two relevant health-related QoL domains of people with dementia. However, in future studies especially the inter-rater reliability of the QoL-AD proxy has to be examined.
Background: The maintenance and promotion of Quality of Life (QoL) of people with dementia is a major outcome in intervention studies and health care. The Quality of Life Alzheimer's Disease (QoL-AD) is an internationally recommended QoL measurement also available in German language. Until now, only a few results on the psychometric properties of the German QoL-AD were available. Objective: Evaluation of internal consistency and construct validity of the QoL-AD proxy. Method: A principal component analysis (secondary data analysis) of the 13 QoL-AD items was carried out based on the total sample of 234 people with dementia from nine nursing homes in Germany. Subsequently, the internal consistency of the identified factors was examined using Cronbach's alpha. Results: Two factors physical and mental health and social network were determined. Both factors explain 53 % of the total variance. The stability of both factors was validated in two sensitivity analyses. The internal consistency is good for both factors with a Cronbach's alpha of 0.88 (physical and mental health) and 0.75 (social network). Conclusion: The QoL-AD proxy allows the assessment of two relevant health-related QoL domains of people with dementia. However, in future studies especially the inter-rater reliability of the QoL-AD proxy has to be examined.
Entities:
Keywords:
Demenz; Konstruktvalidität; construct validity; dementia; factorial validity; faktorielle Validität; gesundheitsbezogene Lebensqualität; health related quality of life; internal consistency; interne Konsistenz; nursing home; stationäre Altenpflegeeinrichtung
Authors: Johannes Gräske; Annika Schmidt; Sylvia Schmidt; Franziska Laporte Uribe; Jochen René Thyrian; Bernhard Michalowsky; Susanne Schäfer-Walkmann; Karin Wolf-Ostermann Journal: Health Qual Life Outcomes Date: 2018-09-14 Impact factor: 3.186
Authors: Anja Dautel; Tobias Eckert; Michaela Gross; Klaus Hauer; Martina Schäufele; André Lacroix; Ingrid Hendlmeier; Bastian Abel; Rebekka Pomiersky; Julia Gugenhan; Gisela Büchele; Katrin C Reber; Clemens Becker; Klaus Pfeiffer Journal: BMC Geriatr Date: 2019-04-30 Impact factor: 3.921
Authors: Bernhard Michalowsky; Wolfgang Hoffmann; Wiebke Mohr; Anika Rädke; Feng Xie Journal: Health Qual Life Outcomes Date: 2022-10-05 Impact factor: 3.077