EAN: 9781907673870

GUIDE TO ASSESSMENT SCALES IN PARKINSONS DISEAS...

This Guide assesses the key clinimetric attributes in the assessment of Parkinson's Disease
(PD)  with the intention to offer rapid and pragmatic information on the most relevant scales
used in PD. Parkinson's disease affects approximately 4 million people globally and is most
commonly seen in people over the age of 50. The disease is a progressive disorder of the
nervous system  and presents a number of movement and cognitive symptoms  thereby greatly
affecting a patients quality of life. The use of scales for assessment in neurological
disorders such as PD arises from the need to quantify disorders and states (such constructs as
disability  symptoms  quality of life). Assessment scales are often categorised into two
categories: generic (i.e. those scales usable in any health condition)  and specific (i.e.
scales developed for exclusive use in PD). They can have a variety of components: single-item
and multi-item or composite scale  unidimensional and multidimensional  and as disease-centered
and patient-centered measures. The creation and validation of scales is complex  with scales
undergoing numerous studies to assess criteria such as acceptability  reliability  and
responsiveness. In the process of validation of a scale the following attributes should be
tested to ascertain whether a scale is an effective instrument of measurement.

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