Evaluating the Psychometric Properties of the Psychological Capital Questionnaire (PCQ) in Patients with Parkinson’s Disease

2021 ◽  
pp. 1-8
Author(s):  
Bradley McDaniels ◽  
Chun-Lung Lee ◽  
Malachy Bishop
Keyword(s):  
Parkinson’S Disease ◽  
Parkinson's Disease ◽  
Health Outcomes ◽  
Psychometric Properties ◽  
Psychological Capital ◽  
Test Validity ◽  
Cronbach’S Alpha ◽  
Modeling Framework ◽  
Factor Loadings ◽  
Cronbach's Alpha

Background: Positive personality resources have demonstrated the ability to positively impact health outcomes. Objective: To examine the psychometric properties of the original Psychological Capital Questionnaire (PCQ-24) in patients with Parkinson’s disease (PD). Methods: A sample of 114 individuals with PD completed the PCQ-24, and via a latent factor modeling framework exploratory and confirmatory factor analyses were conducted to evaluate the psychometric properties in people with PD. Results: Exploratory factor analysis (EFA) revealed that both the efficacy and hope scales were reliable (Cronbach’s alpha = 0.87 and 0.86, respectively) and had statistically acceptable validity with strong factor loadings all above the practical threshold of 0.60. The resilience and optimism scales were also reliable (Cronbach’s alpha = 0.78 and 0.73, respectively) but had only moderately acceptable validity in part due to three reverse-scored items (i.e., No. 13, 20, & 23) with weak factor loadings of 0.26, 0.46, and 0.50, respectively. After excluding these at-risk items, the overall factor loadings for resilience and optimism were significantly improved at the acceptable above 0.60. The CFA results confirm a statistically acceptable model fit for the modified version (only 21-items) of the PCQ in the PD sample. Conclusion: Both EFA and CFA analyses provide statistical evidence supporting the modified PCQ version and demonstrate better test validity and reliability in the PD population. The refined PCQ form is both effectively shorter and psychometrically superior to the original and has promise in investigating health outcomes in people with PD.

The Witnessing of Disenfranchised Grief: Reliability and Validity

2013 ◽  
Vol 21 (3) ◽  
pp. 401-414 ◽  
Author(s):  
Jean S. St. Clair
Keyword(s):  
Psychometric Properties ◽  
Reliability And Validity ◽  
Disenfranchised Grief ◽  
Cronbach’S Alpha ◽  
Community Based ◽  
One Dimensional ◽  
Factor Loadings ◽  
Cronbach's Alpha ◽  
Item Questionnaire

Background and Purpose: To examine the psychometric properties of a newly designed instrument: Witnessing of Disenfranchised Grief (WDG). Methods: The 22-item questionnaire was administered to a community-based sample of convenience (N= 201). Each subject reported having experienced a loss by death or miscarriage. There was no stipulation regarding the timing of the loss. Results: The tool was found to be one dimensional with factor loadings of 0.40–0.78, inter-item correlation ranging fromp< .01 top< .05, and a Cronbach’s alpha of 0.91. A loss that was viewed as witnessed resulted in decreased manifestation of some grief symptoms. Conclusions: The WDG is a measure of the degree to which one who grieves perceives their loss to be witnessed.

scholarly journals Reliability and Validity of 39-Item Parkinson’s Disease Questionnaire and Parkinson’s Disease Quality of Life Questionnaire

2017 ◽  
Vol 30 (5) ◽  
pp. 395 ◽  
Author(s):  
Joana Jesus-Ribeiro ◽  
Elsa Vieira ◽  
Pedro Ferreira ◽  
Cristina Januário ◽  
António Freire
Keyword(s):  
Quality Of Life ◽  
Parkinson’S Disease ◽  
Parkinson's Disease ◽  
Life Questionnaire ◽  
Cronbach’S Alpha ◽  
Quality Of Life Questionnaire ◽  
Cronbach's Alpha ◽  
Disease Questionnaire ◽  
Parkinson’S Disease Questionnaire

Introduction: Parkinson’s disease has a significant impact in quality of life, which can be assessed with 39-item Parkinson’s Disease Questionnaire and Parkinson’s Disease Quality of Life Questionnaire. This study aimed to evaluate the reliability and validity of these scales in Portuguese patients.Material and Methods: Reliability was assessed through internal consistency (Cronbach’s alpha) and reproducibility (intraclass correlation coefficient). Regarding construct validity, we performed one-way analysis of variance across different groups according to modified Hoehn and Yahr scale. For criterion validity, we compared both scales with each other and with the Short Form 36-item Health Survey.Results: In a total of 100 patients with Parkinson’s disease, Cronbach’s alpha ranged for 39-item Parkinson’s Disease Questionnaire between 0.66 - 0.98, and for Parkinson’s Disease Quality of Life Questionnaire, between 0.78 - 0.98. Intraclass correlation coefficient for 39-item Parkinson’s Disease Questionnaire ranged between 0.49 - 0.96, and for Parkinson’s Disease Quality of Life Questionnaire, ranged between 0.65 - 0.96. Both scales showed, in general, capacity to discriminate differences among patients in the different stages of disease. The scales presented moderate to strong magnitude correlations with some Short Form 36-item Health Survey domains.Discussion: Cronbach’s alpha coefficients for most domains were satisfactory. Overall, it has been demonstrated good reproducibility, as well as construct and criterion validity.Conclusion: The Portuguese versions of both scales showed to be valid and reliable.

scholarly journals Parkinson’s Disease Gravity Index: A Method by means of Optimal Scaling

2020 ◽  
Vol 2020 ◽  
pp. 1-8
Author(s):  
Marcos Serrano-Dueñas ◽  
Luis Masabanda ◽  
Maria-Rosario Luquin
Keyword(s):  
Parkinson’S Disease ◽  
Parkinson's Disease ◽  
Standard Error ◽  
Convergent Validity ◽  
Optimal Scaling ◽  
Cronbach’S Alpha ◽  
Cronbach's Alpha ◽  
Interval Variables ◽  
Standard Error Of Measurement ◽  
Error Of Measurement

Objective. This study has been designed with the aim of using optimal scaling to perform the allocation of scores and to be able to construct an indicator of the Parkinson’s Disease Gravity Index. Scores were assigned to interrelated dimensions that share information about the patient’s situation, to have an objective, holistic tool which integrates scores so that doctors can have a comprehensive idea of the patient’s situation. Patients and Methods. 120 consecutive patients with Parkinson’s diagnosis were chosen according to the United Kingdom Parkinson’s Disease Society Brain Bank criteria. Subsequently, all the chosen dimensions were transformed into interval variables for which the formula proposed by Sturges was used. Once the dimensions were transformed into interval variables, optimal scaling was carried out. Subsequently, the following attributes were analyzed: quality and acceptability of the data; reliability: internal consistency, reliability index, Cronbach’s alpha, and standard error of measurement; finally, validity: convergent validity and validity for known groups. Results. There were no missing data. An appropriate Cronbach’s alpha value of 0.71 was gathered, and all items were found to be pertinent to the scale. The item homogeneity index was 0.36. Precision evaluated with the standard error of measurement was 7.8. The Parkinson’s Disease Gravity Index discriminant validity (validity for known groups), assessed among the different stages of Hoehn and Yahr scale by the Kruskal–Wallis test, showed major significance (X2 = 32.7, p ≤ 0.001 ). Conclusions. The Parkinson’s Disease Gravity Index has shown adequate metric properties.

scholarly journals Validity and Reliability of Short-Form McGill Pain Questionnaire-2 (SF-MPQ-2) in Iranian People with Parkinson’s Disease

2020 ◽  
Vol 2020 ◽  
pp. 1-7 ◽  
Author(s):  
Maryam Mehdizadeh ◽  
Seyed-Mohammad Fereshtehnejad ◽  
Sepide Goudarzi ◽  
Ainaz Moshtagh ◽  
Farzaneh Dehghanian Nasrabadi ◽  
...  
Keyword(s):  
Parkinson’S Disease ◽  
Parkinson's Disease ◽  
Convergent Validity ◽  
Short Form ◽  
Intraclass Correlation ◽  
Mcgill Pain Questionnaire ◽  
Validity And Reliability ◽  
Cronbach’S Alpha ◽  
Pain Questionnaire ◽  
Cronbach's Alpha

Purpose. Pain is one of the nonmotor symptoms of Parkinson’s disease (PD) that, in order to be better managed, requires to be evaluated. Evaluations are done using pain assessment scales such as the Short-Form McGill Pain Questionnaire-2 (SF-MPQ-2). The goal of this study was to assess the psychometric properties of SF-MPQ-2 to measure pain in people with PD. Methods. Four hundred and twenty-eight PD patients with a mean (SD) age of 60.11 (11.44) years were included. Accessibility was measured through floor and ceiling effects. Dimensionality was estimated by exploratory factor analysis. The association between SF-MPQ-2 and other scales such as Neuropathic Pain Symptom Inventory, Douleur Neuropathic 4, Brief Pain Inventory, King’s Pain Parkinson’s Disease Scale, and Visual Analog Scale-Pain was considered to calculate convergent validity. Internal consistency and test-retest reliability were assessed by Cronbach’s alpha and intraclass correlation coefficient (ICC), respectively. Results. A noticeable floor effect was found. Dimensionality results indicated four factors for this scale. A strong relationship was found between the SF-MPQ-2 total score and other scales (r = 0.55 to 0.85). In reliability analysis, Cronbach’s alpha and ICC were 0.93 and 0.94 for SF-MPQ-2, respectively. Conclusion. The results of this study showed that SF-MPQ-2 has adequate validity and reliability to measure pain in people with Parkinson’s disease.

scholarly journals Validation of the Bulgarian version of scales for outcomes in Parkinson’s disease – autonomic (SCOPA-AUT-BG)

Folia Medica ◽  
2013 ◽  
Vol 55 (3-4) ◽  
pp. 56-62 ◽  
Author(s):  
Stefka G. Mantarova ◽  
Irena V. Velcheva ◽  
Spaska O. Georgieva ◽  
Katerina I. Stambolieva
Keyword(s):  
Parkinson’S Disease ◽  
Parkinson's Disease ◽  
Construct Validity ◽  
Internal Consistency ◽  
Disease Stage ◽  
Cronbach’S Alpha ◽  
Retest Reliability ◽  
Autonomic Symptoms ◽  
Cronbach's Alpha ◽  
Test Retest Reliability

ABSTRACT The last twenty years have witnessed a surge of interest in the autonomic symptoms in Parkinson’s disease (PD) and the possibilities to diagnose and treat them. The specialized questionnaire assessing the autonomic symptoms in Parkinson’s disease (SCOPA-AUT) has been validated and available in English, Dutch and Spanish. In this study we aim at evaluating the validity, reliability and applicability of the Bulgarian version of SCOPAAUT (SCOPA-AUT-BG ). PATIENTS AND METHODS: The study included 55 patients with idiopathic PD (mean age 64.4 ± 8.9 yrs), and 40 healthy controls (mean age 58.5 ± 9.4 yrs). Clinical severity and disease stage were assessed by United Parkinson’s disease rating scale (UPRDS) and Hoen and Yahr (H&Y). Thirty-two of the PD patients completed SCOPA-AUT-BG again after a 7-day interval. Questionnaire reliability was analyzed by determining the internal consistency, homogeneity, discriminatory and construct validity and test-retest reliability. RESULTS: Analyses showed good internal consistency of the summary evaluation of SCOPAAUT- BG (coefficient alpha of Cronbach = 0.79), which indicates the high reliability of the questionnaire. The lowest Cronbach’s alpha coefficient (0.53) was found for the subscale “cardiovascular functions”. A dominant role belongs to the subscales for gastrointestinal and urinary functions (Cronbach’s Alpha > 0.7), where a significantly high correlation of PD with the UPDRS scale was observed. We found high test-retest reliability based on the responses associated with dysfunction of the gastrointestinal, urinary, thermoregulatory and pupillary autonomic systems. The correlation of the results of SCOPA-AUT-BG with UPDRS is higher than that with H&Y, and the construct validity is high except for the cardiovascular and pupillomotor functions subscales. CONCLUSION: The results of this study show that SCOPA-AUT-BG is a valid and reliable specialized questionnaire to evaluate autonomic function in patients with Parkinson’s disease. Using it allows for more detailed clinical evaluation of these patients and justifies the need to refer them to specialized examination of autonomic functions.

scholarly journals Validation of Parkinson’s Disease-Related Questionnaires in South Africa

2020 ◽  
Vol 2020 ◽  
pp. 1-9
Author(s):  
Gill Nelson ◽  
Ntombizodwa Ndlovu ◽  
Nicola Christofides ◽  
Tintswalo M. Hlungwani ◽  
Irene Faust ◽  
...  
Keyword(s):  
Parkinson’S Disease ◽  
Parkinson's Disease ◽  
Internal Consistency ◽  
Rating Scale ◽  
Motor Task ◽  
Rank Correlation ◽  
Epidemiological Studies ◽  
Clinical Severity ◽  
Cronbach’S Alpha ◽  
Cronbach's Alpha

Background. There are very few epidemiological studies investigating Parkinson’s disease (PD) in Africa. The hundreds of local languages and dialects make traditional screening and clinical evaluation tools difficult to use. Objective. The objective of the study was to validate two commonly used PD questionnaires in an African population. Methods. The PD Screening Questionnaire (PDSQ) and Parkinson’s Disease Questionnaire (PDQ-39) were modified and translated into Afrikaans, Setswana, and isiZulu and administered to a sample of healthy local residents. We assessed the internal consistencies and cluster characteristics of the questionnaires, using a Cronbach’s alpha test and exploratory factor analysis. The questionnaires were then administered to a population-based sample of 416 research participants. We evaluated the correlations between the questionnaires and both a timed motor task and the Unified Parkinson’s Disease Rating Scale motor subsection 3 (UPDRS3), using locally weighted scatterplot smoothing (LOWESS) regression analysis and Spearman’s rank correlation. Results. Both questionnaires had high overall internal consistency (Cronbach’s alpha = 0.86 and 0.95, respectively). The modified PDQ-39 had evidence of five subscales, with Factor 1 explaining 57% and Factor 2 explaining 14%, of the variance in responses. The PDSQ and PDQ-39 scores were correlated with the UPDRS3 score (ρ = 0.35, P<0.001; and ρ = 0.28, P<0.001, respectively). Conclusion. The translated PDSQ and PDQ-39 questionnaires demonstrated high internal consistency and correlations with clinical severity of parkinsonism and a timed motor task, suggesting that they are valid tools for field-based epidemiological studies.

scholarly journals The 8-item Morisky medication adherence scale: validation of a Portuguese version in HIV patients

2020 ◽  
Vol 30 (Supplement_5) ◽  
Author(s):  
A Aguiar ◽  
C Piñeiro ◽  
R Serrão ◽  
R Duarte
Keyword(s):  
Medication Adherence ◽  
Psychometric Properties ◽  
Reliability Analysis ◽  
Cronbach’S Alpha ◽  
Portuguese Version ◽  
Cronbach's Alpha ◽  
Adherence To Medication ◽  
Morisky Medication Adherence Scale ◽  
Adherence Scale ◽  
The Mean

Abstract Background Antiretroviral therapy (ART) has the most effective treatment for people with HIV, but its effectiveness depends on the individual medication adherence. Morisky Medication Adherence Scale (MMAS-8) is one of the most widely used scales to assess patient adherence. Thus, we aimed to validate a Portuguese version of MMAS-8 and determine its psychometric properties in HIV positive patients. Methods A cross-sectional survey was conducted in Centro Hospitalar Universitário São João (Porto, northern Portugal) at the infectious diseases department. After authorization to use the scale - granted by the author - and, a standard forward-backwards procedure to translate MMAS-8 to Portuguese, the questionnaire was applied to 233 patients with HIV doing ART. Reliability was assessed using Cronbach's alpha and test-retest reliability. Three levels of adherence were considered: 0 to &lt; 6 (low), 6 to &lt; 8 (medium), 8 (high). Results In the studied sample, the mean age was 45.03 years (SD = 11.63), 80.3% men, 19.3% women and 1 transgender, and 53.8% had ≤9 years of education. The mean number of prescribed ART per patient was 1.76. The mean score for the medication adherence scale was 7.29 (SD = 6.74). For the reliability analysis, 12 patients were excluded due to missing data (n = 221). Regarding the level of adherence, 22.5% were low adhering, 71.6% medium and 5.9% high. Corrected item-total correlations showed that 1 item does not correlate very well with the overall scale and was dropped. Scale reliability analysis for the remaining 7 items revealed an overall Cronbach's alpha of 0.661. Women had a protective effect on adherence (OR = 0.31;95%CI:0.15-0.66). Number of years doing ART, age of participants, and type of residence didn't show to be correlated with adherence. Conclusions MMAS-8 is a reliable and valid measure to detect patients at risk of non-adherence. A satisfactory Cronbach's alfa (0.661) was obtained. In general, adherence to medication was medium or high. Key messages This scale can be applied nationwide in other different hospitals, as it could serve as a tool for measuring adherence to ART that can allow for better health care to the ones that are low adhering. A Portuguese version of the MMAS-8 was created for measuring adherence to ART that maintained a similar structure to the original MMAS-8 and good psychometric properties.

Scale of Assessment of Self-Care Behaviors with Arteriovenous Fistula in Hemodialysis: A Psychometric Study in Brazil

2021 ◽  
pp. 105477382198980
Author(s):  
Marta Nunes Lira ◽  
Clemente Neves Sousa ◽  
Maria Carolina Medeiros Wanderley ◽  
Natália Ramos Costa Pessoa ◽  
Kelly Cristiane Rocha Lemos ◽  
...  
Keyword(s):  
Factor Analysis ◽  
Psychometric Properties ◽  
Arteriovenous Fistula ◽  
Content Validity ◽  
Self Care ◽  
The Self ◽  
Expert Committee ◽  
Cronbach’S Alpha ◽  
Cronbach's Alpha ◽  
Confirmatory Factor

The purpose of this study was to evaluate the psychometric properties of the Brazilian Scale for the Assessment of Self-Care Behaviors with Arteriovenous Fistula in Hemodialysis. Cross-sectional validation study, followed the recommendation provided by Sousa and Rojjanasrirat. Content validity, explanatory and confirmatory factor analyses used to check validity and Cronbach’s alpha was the reliability measure. Three hundred hemodialysis patients with arteriovenous fistula were included in the study. The expert committee assessed the content validity. Exploratory factor analysis confirmed the same two-factor structure found for the original scale, explaining 60.10% of the variance. Such solution was checked by confirmatory factor analysis with Cronbach’s alpha equal to 0.920, 0.810, and 0.884 for the overall scale, the self-care in management of signs and symptoms and the self-care in prevention of complications subscales respectively. The scale has good psychometric properties to assess self-care behaviors and can be used with Brazilian patients on hemodialysis with arteriovenous fistula.

Psychometric Properties of the Abbreviated Multidimensional Acculturation Scale and the Multigroup Ethnic Identity Measure With Japanese Sojourners

Assessment ◽  
2016 ◽  
Vol 24 (1) ◽  
pp. 104-114 ◽  
Author(s):  
Makoto Miyoshi ◽  
Kimberly Asner-Self ◽  
Sheng Yanyan ◽  
Jennifer M. Koran
Keyword(s):  
United States ◽  
Ethnic Identity ◽  
Construct Validity ◽  
Psychometric Properties ◽  
Factor Structure ◽  
Japanese Version ◽  
The United States ◽  
Cronbach’S Alpha ◽  
Cronbach's Alpha ◽  
Multigroup Ethnic Identity Measure

The current study examined psychometric properties of the Japanese version of Abbreviated Multidimensional Acculturation Scale (AMAS-ZABB-JP) and the 20-item Multigroup Ethnic Identity Measure (MEIM-JP) with 273 Japanese sojourners and immigrants to the United States. The theoretical six-factor structure for the AMAS-JP and two-factor structure for the MEIM-JP was consistent with the literature. The subscales of the AMAS and MEIM showed expected patterns of correlation with each other and with additional variables (i.e., number of years in the United States), providing evidence for construct validity. Cronbach’s alpha reflected high levels of reliability for both scales. Despite strong psychometric findings, there were translational and cultural-based findings that suggest the need for further research.

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