Quality of life in Parkinson’s disease patients: validation of the Short-Form Eight-item Parkinson’s Disease Questionnaire (PDQ-8) in Taiwan

Huang, Tzu Ting; Hsu, Hua Yun; Wang, Bi Hwa; Chen, K.-H.

doi:10.1007/s11136-010-9777-3

Cited by 15 publications

(14 citation statements)

References 21 publications

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“…To our knowledge, this was the first study to evaluate the PDQ-8 in mainland China longitudinally with a large sample. Our results showed good validity and reliability of the Chinese version PDQ-8, in accordance with other validation studies [ 8 , 22 ]. There was no floor or ceiling effect of the PDQ-8-SI and the PDQ-39-SI.…”

Section: Discussionsupporting

confidence: 91%

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

Chen

Yang

Liu

et al. 2017

Health Qual Life Outcomes

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BackgroundParkinson’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.MethodsIn 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.ResultsThe 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, P<0.001). Results suggested that the PDQ-8 was also associated with other clinical scales of mobility, depression and cognition. The convergent validity and discriminant validity of the PDQ-8 were demonstrated by item-to-dimension correlations. There was acceptable internal consistency of the PDQ-8 (Cronbach’s α: 0.80; Item-scale correlation efficient: 0.56–0.72). The PDQ-8 replicated the results of the PDQ-39 well at all follow-up time points (intraclass correlation coefficient: 0.96–0.98). In addition, there was good test-retest reliability of the PDQ-8.ConclusionThe PDQ-8 is a valid and reliable instrument assessing health-related quality of life for PD patients in the mainland of China.Electronic supplementary materialThe online version of this article (doi:10.1186/s12955-017-0742-5) contains supplementary material, which is available to authorized users.

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Section: Discussionsupporting

confidence: 91%

“…In China, the PDQ-39 has been translated and validated by Tsang KL et al [ 7 ]. An evaluation of the Chinese version of PDQ-8 has been conducted in Taiwan with cross-sectional design and a relatively small sample size [ 8 ]. A different Chinese version of the PDQ-8 was also validated with promising results in Singapore [ 9 ].…”

Section: Introductionmentioning

confidence: 99%

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

Chen

Yang

Liu

et al. 2017

Health Qual Life Outcomes

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“…As shown in Table 5, the item-to-scale internal consistency of the Persian PDQ-8 is within the acceptable range compared to other reports. Generally, the independent Persian version of the PDQ-8 showed acceptable internal consistency, which is in line with the other studies using the independent PDQ-8 [7,28]. …”

Section: Discussionsupporting

confidence: 90%

“…The Cronbach’s alpha coefficient was estimated to be lower than 0.9 in all studies (between 0.72 and 0.88), which is almost lower than PDQ-39 in different reports. Our Cronbach’s alpha estimate (0.74) is quite similar to the Greek (0.72) [10], Italian (0.72) [24] and English version in Canadian (0.72) [25] and Singaporean (0.75) [9] populations while some other studies showed higher alpha coefficients [7,26-28]. As shown in Table 5, the item-to-scale internal consistency of the Persian PDQ-8 is within the acceptable range compared to other reports.…”

Section: Discussionsupporting

confidence: 73%

Psychometric study of the Persian short-form eight-item Parkinson’s disease questionnaire (PDQ-8) to evaluate health related quality of life (HRQoL)

Fereshtehnejad

Naderi

Rahmani

et al. 2014

Health and Quality of Life Outcomes

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BackgroundTo assess validation and reliability of the Persian version of the short-form 8-item Parkinson’s disease questionnaire (PDQ-8) and to compare its psychometric properties with that of the long-form questionnaire (PDQ-39) in order to evaluate the health-related quality of life (HRQoL) in patients with Parkinson’s disease (PD).MethodsThis cross-sectional study was conducted on 114 non-demented idiopathic PD (IPD) patients consecutively recruited from an outpatient referral movement disorder clinic. Patients were interviewed to fill in the Persian version of PDQ-39 and PDQ-8 questionnaires and clinical examination was performed to measure disease severity indices.ResultsThe Cronbach’s alpha coefficient of the entire PDQ-8 was 0.740 (95% CI: 0.661-0.806). Replacement of PDQ-8 items with other questions with the highest internal consistency within each dimension of the original PDQ-39 did not improve Cronbach’s alpha coefficient [0.723 (95% CI: 0.639-0.794)]. The scores from both PDQ-8 and PDQ-39 had significant correlation with the Hoehn & Yahr (rPDQ-8 = 0.376, rPDQ-39 = 0.442), and Schwab & England (rPDQ-8 = -0.503, rPDQ-39 = -0.598) disease severity scales and disease duration (rPDQ-8 = 0.342, rPDQ-39 = 0.396).ConclusionsPersian version of the short-form PDQ (PDQ-8) was shown to be a valid and reliable instrument to assess disease-specific HRQoL in a PD population when used independently. Although the PDQ-8 items were not necessarily those with the highest internal consistency in the components of PDQ-39, they entirely showed proper psychometric properties especially in mental and behavioral aspects. PDQ-8 is a practical and informative instrument in daily clinical practice where clinicians are in shortage of time and when a validated self-reported brief questionnaire is of value.

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“…PDQ 39 covers eight aspects of quality of life including mobility, activities of daily living, emotional wellbeing, stigma, cognition, communication and bodily discomfort (Jenkinson et al, 1997). PDQ 39 also is translated in forty languages (Huang et al, 2011).…”

Section: Introductionmentioning

confidence: 99%

Rehabilitation Process for Parkinson Disease Patient using Exergames

Rauf¹,

Amran²,

Marjudi³

et al. 2016

IJCA

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The increasing rate of PD patient requires more creative approach to assist in the rehabilitation process. Support group such as Malaysian Parkinson Disease Association or MPDA normally carry out activities such as dancing and Tai Chi have limited space to cater to all PD patient at once. Rehabilitation process involves cost including cost for transportation and registration fees for patient to go to rehab center. On the other hand, rehabilitation processes are boring and that makes the patient unable to carry out the rehabilitation process consistently. Although exergames have been in the market for three decades now, it still lacks on focus on users with special needs. Most exergames are developed for healthy people. There are a few exergames developed for PD patient but the tools involved for them to play or indirectly rehab them is not suitable since it requires them to hold an item. PD patient have tremors and this will make it difficult for them to enjoy the game. It is crucial for developer to design games with the objectives for particular rehabilitation needs and capabilities as well as the target population. Certain exergames developed for PD patient are too challenging and this fails to motivate PD patient. Up to this point, limited research has been conducted for hand eye coordination. The purpose of this research is to identify and propose a framework that enables development of application for patient with Parkinson disease to carry out rehab based on their stages.

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Quality of life in Parkinson’s disease patients: validation of the Short-Form Eight-item Parkinson’s Disease Questionnaire (PDQ-8) in Taiwan

Abstract: The results of this study suggest the PDQ-8 is a valid and reliable disease-specific health-related quality-of-life instrument for Parkinson's disease in Taiwan when used independently of the PDQ-39.

Cited by 15 publications

References 21 publications

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

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

Psychometric study of the Persian short-form eight-item Parkinson’s disease questionnaire (PDQ-8) to evaluate health related quality of life (HRQoL)

Rehabilitation Process for Parkinson Disease Patient using Exergames

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