Instrument Scoring

The PDQUALIF consists of 33 items in seven domains plus one global HRQoL item. The number of items in each domain and the item numbers that refer to that domain are noted below:

The PDQUALIF has seven five-point Likert response scales. The responses are scored as follows:

Each domain of the PDQUALIF is scored separately.

Scoring Method:


Time to Complete:

Patients typically completed the PDQUALIF in 10 to 15 minutes.

The scoring and the transformation of the scores requires approximately 10 minutes. 


Instrument Information


RWS Life Sciences

As the leading and preferred supplier of translation and linguistic validation solutions to the life science industry, we provide zero-defect translations you can trust. Learn more about our services!

Visit our Website


Parkinson Study Group

The Parkinson Study Group (PSG) is a non-profit group of physicians and other health care providers from medical centers in the United States, Canada and Puerto Rico experienced in the care of Parkinson patients and dedicated to clinical research of Parkinson disease.

Visit PSG Website

Request a Translation

Request Usage License