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Parkinson's Disease Quality of Life Scale (PDQUALIF)
Availability
Please visit this website for more information about the instrument: Parkinsons Disease Quality of Life Scale.
Classification
Supplemental – Highly Recommended: Parkinson’s Disease (PD)
Short Description of Instrument
The Parkinson’s Disease Quality of Life Scale (PDQUALIF) is a (Parkinson’s) disease specific health related quality of life questionnaire. The 33 item patient self report instrument has 32 domain specific items and 1 global item. The 7 subscales measure social/role function (9) self image/sexuality (7), sleep (3), outlook (4), physical function (5), Independence (2) and urinary function (2).
Scoring
Subscale scores are created by transforming raw scores to a 0 to 100 measurement scale by summing the items within a subscale, dividing by the maximum possible total score for that subscale, and multiplying by 100, with lower scores indicating a better quality of life. A total score for the scale was computed by taking an un-weighted average of the individual subscale scores.
References
Development and Testing of the Parkinson’s Disease Quality of Life Scale (PDQUALIF)Welsh et al. 2003 Mov Dis 18(6) 637-645.
 
A Controlled Trial of Rasagiline in Early PD The TEMPO Study. Parkinson Study Group. 2002 Arch Neurol 59: 1937-1943
 
Pramipexole vs. Levodopa as Initial Treatment for Parkinson’s Disease. The Parkinson Study Group. Arch Neurol. 2004;(61): 1044-1053.
 
A Randomized Placebo-Controlled Trial of Rasagiline in Levodopa-Treated patients with Parkinson Disease and Motor Fluctuations The Presto Study, The Parkinson Study Group 2005 Arch Neurol (62) 241-248.
 
Does Levodopa slow or hasten the rate of progression of Parkinson’s disease? JNeurol 2005;(22):731-40.
SF-36 includes less Parkinson Disease targeted content but is more responsive to change than two PD-targeted Health –related quality of life measures. Brown et al 1009 Qual Life Res 18-1219-1237
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