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Journal of Alzheimers Disease & Parkinsonism | ISSN: 2161-0460 | Volume: 8
October 19-20, 2018 | New York, USA
5
th
International Conference on
Parkinson’s disease and Movement Disorders
The Persian version of the Penn Parkinson's daily activities questionnaire-15: Construct validity and
reliability
Negar Nikbakht
Shahid Beheshti University of Medical Sciences, Iran
Background:
Appropriate information on the functional capacity of Parkinson's disease (PD) patients to perform instrumental activities
of daily living (IADL) plays an important role in assessment of their functional independence. The aim of this work was to describe the
construct validity and reliability of the Persian version of the Penn Parkinson's Daily Activities Questionnaire-15 (PV-PDAQ-15).
Methods:
Knowledgeable informants of Parkinson's disease participants (n = 165) completed the PV-PDAQ-15. Candidate Parkinson's
disease participants were assigned a diagnosis of normal cognition, mild cognition impairment or dementia based on clinical dementia
rating scale. To evaluate the reliability of the questionnaire, test-retest and internal consistency were examined. Construct validity was
assessed by correlating questionnaire scores with Lawton IADL scale.
Results:
Test-retest reliability (ICC= 0.99, p < 0.001) and internal consistency (Cronbach's α = 0.99; item-total correlation coefficients
ranged from 0.94 to 0.98) were high. There was strong correlation between the PV-PDAQ-15 and the Lawton IADL scale (r = 0.95, p <
0.001).
Conclusions:
The PV-PDAQ-15 appeared to be a reliable and valid Parkinson's disease specific instrument that can be useful in clinical
and research settings.
negarnik1994@yahoo.comJ Alzheimers Dis Parkinsonism 2018, Volume 8
DOI: 10.4172/2161-0460-C6-052