BACKGROUND/RATIONALE: This study tested the psychometric properties of the Quality of Life in Late-Stage Dementia (QUALID) Scale using Rasch analysis. The QUALID includes 11 items with a 5-point response scale. Scores range from 11 to 55, and lower scores indicate higher quality of life (QoL). METHODS: Baseline data from a randomized clinical trial including 137 residents from 14 nursing homes were used. Psychometric testing included item mapping, evaluation of response categories, item reliability, construct validity based on INFIT and OUTFIT statistics, and convergent validity based on correlations between QoL and pain, agitation, depression, and function. RESULTS: The Cronbach α was .89. All the items except "appears physically uncomfortable" fit the model. There was a significant relationship between QoL and depressive symptoms ( r = .71, P = .001), pain ( r = .26, P = .01), physical function ( r = -.19, P = .03), and agitation ( r = .56, P = .001). The categories were appropriately used. Item mapping suggested a need for easier items.
RCT Entities:
BACKGROUND/RATIONALE: This study tested the psychometric properties of the Quality of Life in Late-Stage Dementia (QUALID) Scale using Rasch analysis. The QUALID includes 11 items with a 5-point response scale. Scores range from 11 to 55, and lower scores indicate higher quality of life (QoL). METHODS: Baseline data from a randomized clinical trial including 137 residents from 14 nursing homes were used. Psychometric testing included item mapping, evaluation of response categories, item reliability, construct validity based on INFIT and OUTFIT statistics, and convergent validity based on correlations between QoL and pain, agitation, depression, and function. RESULTS: The Cronbach α was .89. All the items except "appears physically uncomfortable" fit the model. There was a significant relationship between QoL and depressive symptoms ( r = .71, P = .001), pain ( r = .26, P = .01), physical function ( r = -.19, P = .03), and agitation ( r = .56, P = .001). The categories were appropriately used. Item mapping suggested a need for easier items.
Authors: Ann Kolanowski; Liza Behrens; Erik Lehman; Zita Oravecz; Barbara Resnick; Marie Boltz; Kimberly Van Haitsma; Elizabeth Galik; Jeanette Ellis; Karen Eshraghi Journal: Res Gerontol Nurs Date: 2019-08-27 Impact factor: 1.571
Authors: Ann Kolanowski; Shijun Zhu; Kimberly Van Haitsma; Barbara Resnick; Marie Boltz; Elizabeth Galik; Liza Behrens; Karen Eshraghi; Jeanette Ellis Journal: Aging Ment Health Date: 2021-07-12 Impact factor: 3.514
Authors: Barbara Resnick; Kimberly Van Haitsma; Ann Kolanowski; Elizabeth Galik; Marie Boltz; Shijun Zhu; Jeanette Ellis; Liza Behrens; Karen Eshraghi Journal: Nurs Outlook Date: 2021-07-28 Impact factor: 3.250