Evaluation of PDQ-8 and its relationship with PDQ-39 in China: a three-year longitudinal study.

Kui Chen; Yu-Jie Yang; Feng-Tao Liu; Da-Ke Li; Lu-Lu Bu; Ke Yang; Ying Wang; Bo Shen; Rong-Yuan Guan; Jie Song; Jian Wang; Jian-Jun Wu; Chen, Kui; Yang, Yu-Jie; Liu, Feng-Tao; Li, Da-Ke; Bu, Lu-Lu; Yang, Ke; Wang, Ying; Shen, Bo

Background: Parkinson's disease is characterized by motor and non-motor symptoms with wide ranging impacts on the health-related quality of life. The 39-item Parkinson's disease Questionnaire (PDQ-39) is the most widely used PD-specific health-related quality-of-life questionnaire. The short-form 8-item Parkinson's disease Questionnaire (PDQ-8) was found to produce results similar to that of the PDQ-39 cross-culturally. However, there is no evaluation of the PDQ-8 in the mainland of China.Methods: In this longitudinal study, 283 patients with Parkinson's disease were recruited. The PDQ-39, the PDQ-8 and other scales were administered. Patients attended the clinic once annually for three years to complete the scales.Results: The PDQ-8 was found to have good validity and reliability. There was a strong correlation between the summary indices of the PDQ-8 and the PDQ-39 (r=0.93, PConclusion: The PDQ-8 is a valid and reliable instrument assessing health-related quality of life for PD patients in the mainland of China.

CHINA; PARKINSON'S disease; PUBLIC health; QUALITY of life; MENTAL depression; FOLLOW-up studies (Medicine); COMPARATIVE studies; LONGITUDINAL method; RESEARCH methodology; MEDICAL cooperation; QUESTIONNAIRES; RESEARCH; RESEARCH evaluation; EVALUATION research; PSYCHOLOGY

Health & Quality of Life Outcomes, 2017, Vol 15, p1

1477-7525

Academic Journal

10.1186/s12955-017-0742-5