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Disease burden morbidity assessment by self-report: Psychometric properties in older adults in Spain
|Authors:||Wijers, Irene GM; Ayala, Alba; Rodríguez Blazquez, Carmen; Rodríguez Laso, Ángel; Rodríguez Rodríguez, Vicente ; Forjaz, María João|
Burden of illness
|Publisher:||John Wiley & Sons|
|Citation:||Geriatrics and Gerontology International 18 July 2016|
|Abstract:||[Aim] To carry out an analysis of the psychometric properties of the Disease Burden Morbidity Assessment (DBMA) according to the assumptions of the Classical Test Theory.|
[Methods] A sample of 707 community-dwelling adults aged 65 years and older, living in Spain, completed the DBMA. Psychometric properties of the scale (feasibility, acceptability, scaling assumptions, reliability and construct validity) were analyzed.
[Results] The mean DBMA score was 6.8. Feasibility and acceptability were satisfactory, except for large floor effects (>50%), as well as a skewed distribution (1.8). Item-total corrected correlation ranged 0.10–0.49, item homogeneity index was 0.09 and Cronbach's alpha was 0.72. Disease burden correlated strongly with physical functioning (r = –0.56) and perceived health (r = –0.56), and moderately with depression (r = 0.41) and the Personal Wellbeing Index (r = –0.41). Exploratory factor analysis extracted five factors, explaining 44% of the variance.
[Conclusions] The DBMA is an acceptable and valid instrument for measuring disease burden in older adults. Future studies should include Rasch analysis to further assess dimensionality and explore other measurement properties.
|Publisher version (URL):||http://dx.doi.org/10.1111/ggi.12835|
|Appears in Collections:||(CCHS-IEGD) Artículos|