Translation, adaptation and validation of the Bulgarian version of the King’s Parkinson’s Disease Pain Scale

Abstract Background The purpose of the present study was to translate and cross-culturally adapt the King’s Parkinson’s Disease Pain Scale (KPPS) into Bulgarian and to investigate its psychometric properties in order to provide a validated Parkinson’s disease-specific pain instrument in Bulgarian language (KPPS-BG). Methods Translation into Bulgarian and a cultural adaptation were performed to obtain KPPS-BG. A total of 162 patients with idiopathic Parkinson’s disease were screened for pain using the complementary to the KPPS questionnaire – King’s Parkinson’s Disease Pain Questionnaire (KPPQ). KPPS-BG domain and total scores were calculated and internal consistency, construct validity and test-retest reliability were examined for 129 patients having one or more positive items in the KPPQ-BG. Results 79.6 % of the patients reported one or more types of pain. The most common type was musculoskeletal pain (83.7 %), followed by nocturnal pain (55.0 %), fluctuation-related pain (50.1 %), radicular pain (43.4 %), chronic pain (31.0 %), discoloration, edema/swelling (27.1 %) and, oro-facial pain (14.3 %). Mean KPPS-BG total score was 21.1 ± 17.3 SD. KPPS-BG showed a good reliability (Cronbach’s alpha 0.75). The test-retest reliability of the KPPS-BG was high and the intraclass correlation coefficient was 0.92, demonstrating а good repeatability. KPPS-BG total score was higher in patients with postural instability gait difficulty motor subtype, compared to tremor-dominant or indeterminate subtype. Significant positive correlations were found between KPPS-BG total score and modified H&Y, Movement Disorders Society Unified Parkinson’s Disease Rating Scale part III. Conclusions The KPPS-BG constitutes a reliable, comprehensive and useful tool for pain assessment in native Bulgarian patients with Parkinson’s disease.

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Translation, adaptation and validation of the Bulgarian version of the King’s Parkinson’s Disease Pain Scale

10.21203/rs.3.rs-256649/v1 ◽

2021 ◽

Author(s):

Galina Stoyanova-Piroth ◽

Ivan Milanov ◽

Katerina Stambolieva

Keyword(s):

Parkinson’S Disease ◽

Parkinson's Disease ◽

Rating Scale ◽

Intraclass Correlation ◽

Pain Scale ◽

Radicular Pain ◽

Good Reliability ◽

Retest Reliability ◽

Nocturnal Pain ◽

Test Retest Reliability

Abstract Introduction:The purpose of the present study was to translate and cross-culturally adapt the King's Parkinson's Disease Pain Scale (KPPS) into Bulgarian and to investigate its psychometric properties in order to provide a validated Parkinson’s disease-specific pain instrument in Bulgarian language (KPPS-BG).Methods:Translation into Bulgarian and a cultural adaptation were performed to obtain KPPS-BG. A total of 162 patients with idiopathic Parkinson’s disease were screened for pain using the complementary to the KPPS questionnaire-King’s Parkinson's Disease Pain Questionnaire (KPPQ). KPPS-BG domain and total scores were calculated and internal consistency, construct validity and test-retest reliability were examined for 129 patients having one or more positive items in the KPPQ-BG.Results:79.6% of the patients reported one or more types of pain. The most common type was musculoskeletal pain (83.7%), followed by nocturnal pain (55.0%), fluctuation-related pain (50.1%), radicular pain (43.4%), chronic pain (31.0%), discoloration, edema/swelling (27.1%) and, oro-facial pain (14.3%). Mean KPPS-BG total score was 21.1±17.3 SD. KPPS-BG showed a good reliability (Cronbach's alpha 0.75). The test-retest reliability of the KPPS-BG was high and the intraclass correlation coefficient was 0.92, demonstrating а good repeatability. KPPS-BG total score was higher in patients with postural instability gait difficulty motor subtype, compared to tremor-dominant or indeterminate subtype. Significant positive correlations were found between KPPS-BG total score and modified H&Y, Movement Disorders Society Unified Parkinson’s Disease Rating Scale part III.Conclusion:The KPPS-BG constitutes a reliable, comprehensive and useful tool for pain assessment in native Bulgarian patients with Parkinson’s disease.

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Reliability of using foot-worn devices to measure gait parameters in people with Parkinson’s disease

Neurorehabilitation ◽

10.3233/nre-210101 ◽

2021 ◽

pp. 1-8

Author(s):

Ya-Yun Lee ◽

Ming-Hao Li ◽

Jer-Junn Luh ◽

Chun-Hwei Tai

Keyword(s):

Parkinson’S Disease ◽

Parkinson's Disease ◽

Disease Severity ◽

Wearable Sensors ◽

Good Reliability ◽

Retest Reliability ◽

Early Stages ◽

Gait Parameters ◽

Advanced Stages ◽

Test Retest Reliability

BACKGROUND: Recent advances in technology have warranted the use of wearable sensors to monitor gait and posture. However, the psychometric properties of using wearable devices to measure gait-related outcomes have not been fully established in patients with Parkinson’s disease (PD). OBJECTIVE: This study aimed to investigate the test-retest reliability of body-worn sensors for gait evaluation in people with PD. Additionally, the influence of disease severity on the reliability was determined. METHODS: Twenty individuals with PD were recruited. During the first evaluation, the participants wore inertial sensors on their shoes and walked along a walkway thrice at their comfortable walking speed. The participants were then required to return to the lab after 3–5 days to complete the second evaluation with the same study procedure. Test-retest reliability of gait-related outcomes were calculated. To determine whether the results would be affected by disease severity, reliability was re-calculated by subdividing the participants into early and mid-advanced stages of the disease. RESULTS: The results showed moderate to good reliability (ICC = 0.64–0.87) of the wearable sensors for gait assessment in the general population with PD. Subgroup analysis showed that the reliability was higher among patients at early stages (ICC = 0.71–0.97) compared to those at mid-advanced stages (ICC = 0.65–0.81) of PD. CONCLUSIONS: Wearable sensors could reliably measure gait parameters in people with PD, and the reliability was higher among individuals at early stages of the disease compared to those at mid-advanced stages. Absolute reliability values were calculated to act as references for future studies.

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Exploring test retest reliability and longitudinal stability of digital biomarkers for Parkinson’s disease in the m-Power dataset (Preprint)

10.2196/preprints.26608 ◽

2020 ◽

Author(s):

Mehran Sahandi Far ◽

Simon B. Eickhoff ◽

Maria Goni ◽

Juergen Dukart

Keyword(s):

Parkinson’S Disease ◽

Parkinson's Disease ◽

Healthy Volunteers ◽

Intraclass Correlation ◽

Smart Devices ◽

Longitudinal Stability ◽

Retest Reliability ◽

Medication Effects ◽

Test Retest Reliability ◽

Digital Biomarkers

BACKGROUND Digital biomarkers (DB) as captured using sensors embedded in modern smart devices are a promising technology for home-based symptom monitoring in Parkinson’s disease (PD). Despite extensive application in recent studies test-retest reliability and longitudinal stability of DB has not been well addressed in this context. OBJECTIVE We utilized the large-scale m-Power dataset to establish the test-retest reliability and longitudinal stability of gait, balance, voice and tapping tasks in an unsupervised and self-administered daily life setting in PD patients and healthy volunteers. METHODS Intraclass Correlation Coefficients (ICC) were computed to estimate the test-retest reliability of features that also differentiate between PD and healthy volunteers. In addition, we tested for longitudinal stability of DB measures in PD and HC as well as for their sensitivity to PD medication effects. RESULTS Among the features differing between PD and HC, only few tapping and voice features had good to excellent test-retest reliabilities and medium to large effect sizes. All other features performed poorly in this respect. Only few features were sensitive to medication effects. The longitudinal analyses revealed significant alterations over time across a variety of features and in particular for the tapping task. CONCLUSIONS These results indicate the need for further development of more standardized, sensitive and reliable DB for application in self-administered remote studies in PD patients. Motivational, learning and other confounds may cause a variation in performance that needs to be considered in DB longitudinal applications. CLINICALTRIAL Not applicable

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Exploring test retest reliability and longitudinal stability of digital biomarkers for Parkinson’s disease in the m-Power dataset

10.1101/2020.12.16.20247122 ◽

2020 ◽

Author(s):

Mehran Sahandi Far ◽

Simon B. Eickhoff ◽

María Goñi ◽

Juergen Dukart

Keyword(s):

Parkinson’S Disease ◽

Parkinson's Disease ◽

Healthy Volunteers ◽

Intraclass Correlation ◽

Smart Devices ◽

Longitudinal Stability ◽

Retest Reliability ◽

Medication Effects ◽

Test Retest Reliability ◽

Digital Biomarkers

AbstractBackgroundDigital biomarkers (DB) as captured using sensors embedded in modern smart devices are a promising technology for home-based symptom monitoring in Parkinson’s disease (PD).ObjectiveDespite extensive application in recent studies test-retest reliability and longitudinal stability of DB has not been well addressed in this context. We utilized the large-scale m-Power dataset to establish the test-retest reliability and longitudinal stability of gait, balance, voice and tapping tasks in an unsupervised and self-administered daily life setting in PD patients and healthy volunteers.MethodsIntraclass Correlation Coefficients (ICC) were computed to estimate the test-retest reliability of features that also differentiate between PD and healthy volunteers. In addition, we tested for longitudinal stability of DB measures in PD and HC as well as for their sensitivity to PD medication effects.ResultsAmong the features differing between PD and HC, only few tapping and voice features had good to excellent test-retest reliabilities and medium to large effect sizes. All other features performed poorly in this respect. Only few features were sensitive to medication effects. The longitudinal analyses revealed significant alterations over time across a variety of features and in particular for the tapping task.ConclusionsThese results indicate the need for further development of more standardized, sensitive and reliable DB for application in self-administered remote studies in PD patients. Motivational, learning and other confounds may cause a variation in performance that needs to be considered in DB longitudinal applications.

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Test-Retest reliability of the Unified Parkinson's Disease Rating Scale in patients with early Parkinson's disease: Results from a multicenter clinical trial

Movement Disorders ◽

10.1002/mds.10011 ◽

2002 ◽

Vol 17 (4) ◽

pp. 758-763 ◽

Cited By ~ 132

Author(s):

Andrew Siderowf ◽

Michael McDermott ◽

Karl Kieburtz ◽

Karen Blindauer ◽

Sandra Plumb ◽

...

Keyword(s):

Parkinson’S Disease ◽

Clinical Trial ◽

Parkinson's Disease ◽

Rating Scale ◽

Multicenter Clinical Trial ◽

Retest Reliability ◽

Disease Rating ◽

Test Retest Reliability ◽

Early Parkinson’S Disease

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Cross-cultural adaptation of the Activities of Daily Living Questionnaire-Brazil in Parkinson’s disease

Arquivos de Neuro-Psiquiatria ◽

10.1590/0004-282x-anp-2020-0396 ◽

2021 ◽

Author(s):

Walter Luis Teixeira ALVES ◽

Iza de FARIA-FORTINI ◽

Ana Carolina Daher Ribas GALVÃO ◽

Francisco Eduardo Costa CARDOSO ◽

Paula Luciana SCALZO

Keyword(s):

Parkinson’S Disease ◽

Parkinson's Disease ◽

Activities Of Daily Living ◽

Daily Living ◽

Intraclass Correlation ◽

Altman Plot ◽

Retest Reliability ◽

Bland Altman Plot ◽

Culturally Adapted ◽

Test Retest Reliability

ABSTRACT Background: Culturally adapted measures to assess the performance of activities of daily living (ADL) in individuals with Parkinson’s disease (PD) are limited in Brazil. Objective: To adapt the ADL Questionnaire to the Brazilian culture and to analyze its reproducibility in individuals with PD. Methods: The ADL Questionnaire was translated and cross-culturally adapted to Brazilian Portuguese language. Reproducibility was analyzed using test-retest reliability and agreement values. The test-retest reliability of the individual items and total scores were calculated. The limits of agreement were verified using the Bland-Altman plot. The standard error of measurement (SEM) and the minimum detectable change (MDC) were calculated. Patients who were classified on a score of 1–4 on the modified Hoehn and Yahr scale were eligible. Results: No divergence was identified between the original and the adapted version, which demonstrated adequate semantic and conceptual equivalence. The Bland-Altman plot showed no systematic changes in the mean test-retest scores. The intraclass correlation coefficient (ICC) was 0.98 (95% confidence interval [95%CI] 0.93–0.99), and all individual items showed good levels of reliability (>0.60). The SEM (SEM%) and MDC (MDC%) values were 3.0 (6.75%) and 8.2 (18.7%), respectively. These values are within the recommended values. Conclusions: The ADL-Brazil Questionnaire is a reliable instrument to be used for clinical and research purposes to assess self-perceptions of ADL performance in individuals with PD.

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Validity and Reliability of the Persian Version of Parkinson’s Disease Sleep Scale-2

Parkinson s Disease ◽

10.1155/2021/2015123 ◽

2021 ◽

Vol 2021 ◽

pp. 1-5

Author(s):

Mohammad Taghi Joghataei ◽

Seyed-Mohammad Fereshtehnejad ◽

Maryam Mehdizadeh ◽

Sepideh Goudarzi ◽

Sayed Amir Hasan Habibi ◽

...

Keyword(s):

Parkinson’S Disease ◽

Parkinson's Disease ◽

Internal Consistency ◽

Convergent Validity ◽

Intraclass Correlation ◽

Depression Scale ◽

Validity And Reliability ◽

Retest Reliability ◽

Persian Version ◽

Test Retest Reliability

Objective. Sleep problems are nonmotor symptoms in Parkinson’s disease that should be carefully evaluated for better management and treatment. Parkinson’s Disease Sleep Scale (PDSS-2) is one of the most reliable tools for measuring sleep difficulties in people with Parkinson’s disease. This study investigated the psychometric properties of the Persian version of PDSS-2. Methods. Four hundred and fifty-six people with Parkinson’s disease with a mean age ±standard deviation of 60.7 ± 11.3 years were engaged in this study. Acceptability was assessed by floor and ceiling effects. Dimensionality was measured by exploratory factor analysis. The convergent validity of PDSS-2 with the Hospital Anxiety and Depression Scale (HADS) was assessed. Internal consistency and test-retest reliability were assessed with Cronbach’s alpha and intraclass correlation coefficient (ICC), respectively. Results. No noticeable ceiling and floor effect was detected. The dimensionality analysis showed three factors. A high correlation was obtained between PDSS-2 and HADS (anxiety subscale). Excellent internal consistency with α = 0.94, and good test-retest reliability with ICC = 0.89 were obtained. Conclusion. This study showed that the Persian version of Parkinson’s Disease Sleep Scale has acceptable validity and reliability for measuring sleep disturbances in people with Parkinson’s disease.

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A new visual feedback-based system for the assessment of pinch force, endurance, accuracy and precision. A test-retest reliability study

Hand Therapy ◽

10.1177/17589983211002550 ◽

2021 ◽

pp. 175899832110025

Author(s):

Alberto Dottor ◽

Eleonora Camerone ◽

Mirko Job ◽

Diletta Barbiani ◽

Elisa Frisaldi ◽

...

Keyword(s):

Visual Feedback ◽

Intraclass Correlation ◽

Precision Grip ◽

Voluntary Contraction ◽

Good Reliability ◽

Retest Reliability ◽

Relative Reliability ◽

Time Accuracy ◽

In The Beginning ◽

Test Retest Reliability

Introduction Given that pinch is a precision grip involved in sustained submaximal activities, a Sustained Contraction (SC) task could be associated to Maximal Voluntary Contraction (MVC). To better evaluate the thumb-index system, the test-retest reliability of pinch MVC and SC, measured by a visual feedback-based pinch gauge was assessed. Methods 26 healthy participants performed MVC and SC in two separate sessions. SC required to maintain 40%MVC as long as possible and it was evaluated in terms of time, accuracy (Mean Distance between force trace and target force, MD), precision (Coefficient of Variability of force trace, CV). MD and CV analyses were conducted dividing the SC task into three equivalent time stages (beginning, middle, exhaustion). Relative Reliability (RR) was measured by Intraclass Correlation Coefficient, and Absolute Reliability (AR) was measured by Standard Error of Measurement and by Bland-Altman plot. Results MVC and Time showed high RR and AR in both hands. RR of MD and CV in right hand was excellent in the beginning and middle stages, and fair in the exhaustion one, showing decreasing reliability as fatigue increases. In the left hand RR of MD and CV was generally lower. MD showed excellent reliability in the beginning stage and good reliability in the other stages. CV showed fair relative reliability at both beginning and middle stages, excellent in the last one. Conversely, it was observed high AR of MD and CV in all stages in both hands. Conclusions All indices are reliable to assess motor control of thumb-index pinch in both hands.

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