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The self‐report Barthel Index: preliminary validation in people with Parkinson’s disease
Author(s) -
Morley D.,
Selai C.,
Thompson A.
Publication year - 2012
Publication title -
european journal of neurology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.881
H-Index - 124
eISSN - 1468-1331
pISSN - 1351-5101
DOI - 10.1111/j.1468-1331.2011.03592.x
Subject(s) - cronbach's alpha , guttman scale , reliability (semiconductor) , medicine , internal consistency , scale (ratio) , activities of daily living , clinical psychology , physical therapy , gerontology , psychometrics , psychology , cartography , developmental psychology , geography , power (physics) , physics , quantum mechanics
Background and purpose: To make a preliminary assessment of the reliability and validity of the self‐report Barthel Index (SRBI) in people with Parkinson’s (PWP) disease. Methods: Thirty‐nine PWP completed the SRBI, the self‐report Schwab & England (S & E) scale and the PDQ‐39. Standard statistical procedures were incorporated to assess the reliability and validity of the SRBI. Results: A Cronbach’s alpha coefficient of 0.69 was calculated, indicating adequate internal consistency. Reliability was further demonstrated through a Guttman split‐half reliability coefficient of 0.74. Validity was demonstrated through highly significant correlations between the SRBI and the S & E scale ( r = 0.64, P < 0.00), the activities of daily living dimension of the PDQ‐39 ( r = −0.60, P < 0.00) and mobility dimension of the PDQ‐39 ( r = −0.49, P < 0.01). Conclusions: Results suggest that the SRBI has the potential to be a reliable and valid indicator of ADL in PWP and utilized in studies that make comparisons across conditions. Further validation is required in a larger sample and through assessment of additional psychometric properties.