scholarly journals Reliability and Validity of Ratings of Perceived Difficulty During Performance of Static Standing Balance Exercises

2019 ◽  
Vol 99 (10) ◽  
pp. 1381-1393 ◽  
Author(s):  
Saud F Alsubaie ◽  
Susan L Whitney ◽  
Joseph M Furman ◽  
Gregory F Marchetti ◽  
Kathleen H Sienko ◽  
...  
Keyword(s):  
Postural Sway ◽  
Reliability And Validity ◽  
Weighted Kappa ◽  
Standing Balance ◽  
Measurement Unit ◽  
Retest Reliability ◽  
Perceived Intensity ◽  
Perceived Difficulty ◽  
Balance Exercises ◽  
Test Retest Reliability

AbstractBackgroundStandardized instruments for measuring the intensity of balance exercises in clinical environments are lacking.ObjectiveThe objective of this study was to develop a method for quantifying the perceived intensity of standing balance exercises.DesignA test-retest study design was used, with repeated evaluations within the same visit and between visits 1 week later.MethodsSixty-two participants who were healthy and 18 to 85 years old (with a mean age of 55 years [SD = 20 years]; 50% women) were enrolled. On each of 2 visits, they performed 2 sets of 24 randomized static standing exercises consisting of combinations of the following factors: surface, vision, stance, and head movement. Postural sway was measured with an inertial measurement unit, and ratings of perceived difficulty (RPD) were recorded using numerical and qualitative scales. The RPD scales were validated against the quantitative sway measures using a general linear model approach. The test-retest reliability of the RPD scales was examined using a weighted kappa coefficient.ResultsBoth RPD scales were associated with postural sway measures with correlation coefficients > 0.6 for the whole sample. The test-retest reliability of the ratings varied considerably across the different balance exercises, and the highest weighted kappa values occurred for RPD scores on the numerical scale within the second visit, as moderate agreement was achieved in 18 of the 24 exercises.LimitationsThe limitations are that the RPD scales need to be validated for other types of balance exercises and in individuals with balance disorders.ConclusionsThe RPD scores correlated with the magnitude of postural sway, suggesting that they can be used as a proxy measure of perceived intensity of balance exercises.

scholarly journals Test-Retest Reliability of the Coronary Heart Disease Damp Phlegm and Blood Stasis Pattern Questionnaire: Results from a Multicenter Clinical Trial

2021 ◽  
Vol 2021 ◽  
pp. 1-6
Author(s):  
Ge Fang ◽  
Yaxin Wang ◽  
Zhenqian Yan ◽  
Xiaowen Zhou ◽  
Xingyu Fan ◽  
...  
Keyword(s):  
Clinical Trial ◽  
Coronary Heart Disease ◽  
Heart Disease ◽  
Blood Stasis ◽  
Reliability And Validity ◽  
Weighted Kappa ◽  
Multicenter Clinical Trial ◽  
Test Interval ◽  
Retest Reliability ◽  
Test Retest Reliability

Background. Damp phlegm and blood stasis pattern (DPBSP) is the main pattern in coronary heart disease (CHD) patients. To quantify and standardize the diagnosis of DPBSP, questionnaires are usually administered. The CHD Damp Phlegm and Blood Stasis Pattern Questionnaire (CHD-DPBSPQ) is the standard metric for measuring CHD-DPBSP signs and symptoms in practice and clinical research. The CHD-DPBSPQ has moderate diagnostic efficiency, as evidenced by its receiver operating characteristic curves. Furthermore, and high reliability and validity have been shown in some studies but not in a multicenter clinical trial. Our purpose was to evaluate the test-retest reliability of a proprietary CHD-DPBSPQ. Methods. The CHD-DPBSPQ uses a standard procedure for measuring symptoms. The (interrater) reliability and validity of this questionnaire have been previously studied. Here, we evaluated the test interval and weighted kappa value of items of test-retest (intrarater) reliability of the CHD-DPBSPQ. The test-retest reliability was evaluated by the intraclass correlation coefficient (ICC) for the total CHD-DPBSPQ score and the phlegm domain and blood stasis domain scores. Weighted kappa statistics were calculated for the individual CHD-DPBSPQ items. Results. Using the CHD-DPBSPQ, 79 patients with late-stage CHD who were participating in a multicenter clinical trial were assessed twice. The ICCs for the CHD-DPBSPQ score were as follows: 0.827 for the total CHD-DPBSPQ, 0.778 for the phlegm domain score, and 0.828 for the blood stasis domain score. The reliability was slightly better in patients whose test interval was ≤14 days. The weighted kappa values of individual items showed moderate consistency. Conclusions. The CHD-DPBSPQ was found to have excellent test-retest reliability in this sample of patients.

scholarly journals Psychometric Properties of Instrumented Postural Sway Measures Recorded in Community Settings in Independent Living Older Adults

2019 ◽  
Author(s):  
Bader Alqahtani ◽  
Patrick J. Sparto ◽  
Susan L. Whitney ◽  
Susan L. Greenspan ◽  
Subashan Perera ◽  
...  
Keyword(s):  
Older Adults ◽  
Independent Living ◽  
Convergent Validity ◽  
Postural Sway ◽  
Rank Correlation ◽  
Standing Balance ◽  
Community Settings ◽  
Balance Performance ◽  
Retest Reliability ◽  
Test Retest Reliability

Abstract Background: In the last few decades, research related to balance in older adults has been conducted in lab-based settings. The lack of portability and high cost that is associated with the current gold standard methods to quantify body balance, limits their application to community settings such as independent living facilities. The purpose of the study was to examine the test-retest reliability and the convergent validity of static standing balance performance using an accelerometer device. Methods: A total of 131 subjects (85% female, mean age 80 ± 8 years) were included for the validity aim, and a sample of 38 subjects were enrolled in the reliability testing (89% female, mean age 76 ± 7 years). Acceleration data in the anterior-posterior and medial-lateral directions was collected for different standing balance conditions. Test-retest reliability was assessed over two testing visits occurring one week apart. Spearman’s rank correlation coefficient was used to test convergent validity at baseline. Results: Balance measurements showed good to excellent reliability in most of measured parameters and were correlated with mobility measurements. Conclusions: Using a portable accelerometer to quantify static standing postural control provides reliable measurements in community settings.

scholarly journals Post-Drive Standing Balance of Vehicle Passengers Using Wearable Sensors: The Effect of On-Road Driving and Task Performance

Sensors ◽  
2021 ◽  
Vol 21 (15) ◽  
pp. 4997
Author(s):  
Victor C. Le ◽  
Monica L. H. Jones ◽  
Kathleen H. Sienko
Keyword(s):  
Task Performance ◽  
Postural Sway ◽  
Wearable Sensors ◽  
Standing Balance ◽  
Balance Performance ◽  
Real Time Traffic ◽  
Balance Exercises ◽  
Before And After ◽  
The Relationship ◽  
And Task

Postural sway has been demonstrated to increase following exposure to different types of motion. However, limited prior studies have investigated the relationship between exposure to normative on-road driving conditions and standing balance following the exposure. The purpose of this on-road study was to quantify the effect of vehicle motion and task performance on passengers’ post-drive standing balance performance. In this study, trunk-based kinematic data were captured while participants performed a series of balance exercises before and after an on-road driving session in real-time traffic. Postural sway for all balance exercises increased following the driving session. Performing a series of ecologically relevant visual-based tasks led to increases in most post-drive balance metrics such as sway position and velocity. However, the post-drive changes following the driving session with a task were not significantly different compared to changes observed following the driving session without a task. The post-drive standing balance performance changes observed in this study may increase vulnerable users’ risk of falling. Wearable sensors offer an opportunity to monitor postural sway following in-vehicle exposures.

scholarly journals Reliability and validity of the Persian version of 5-D itching scale among patients with chronic kidney disease

2021 ◽  
Vol 22 (1) ◽  
Author(s):  
Amin Kordi Yoosefinejad ◽  
Fatemeh Karjalian ◽  
Marzieh Momennasab ◽  
Shahrokh Ezzatzadegan Jahromi
Keyword(s):  
Chronic Kidney Disease ◽  
Kidney Disease ◽  
Psychometric Properties ◽  
Internal Consistency ◽  
Reliability And Validity ◽  
Hemodialysis Patients ◽  
Life Questionnaire ◽  
Retest Reliability ◽  
Persian Version ◽  
Test Retest Reliability

Abstract Background Hemodialysis is considered a major therapeutic method for patients with chronic kidney disease. Pruritus is a common complaint of hemodialysis patients. The 5-D pruritus scale is amongst the most common tools to evaluate several dimensions of itch. Psychometric properties of the 5-D scale have not been evaluated in Persian speaking population with hemodialysis; hence, the objective of this study was to assess reliability and validity of the Persian version of the scale. Methods Ninety hemodialysis patients (men: 50, women: 40, mean age: 54.4 years) participated in this cross-sectional study. The final Persian version of 5-D scale was given to the participants. Tests Compared: One-third of the participants completed the scale twice within 3–7 days apart to evaluate test- retest reliability. Other psychometric properties including internal consistency, absolute reliability, convergent, discriminative and construct validity, floor/ceiling effects were also evaluated. Results The Persian 5-D scale has strong test-retest reliability (ICC= 0.98) and internal consistency (Cronbach’s alpha= 0.99). Standard error of measurement and minimal detectable change were 0.33 and 0.91, respectively. Regarding convergent validity, the scale had moderate correlation with numeric rating scale (r =0.67) and quality of life questionnaire related to itch (r = 0.59). Exploratory factor analysis revealed two factors within the scale. No floor or ceiling effect was found for the scale. Conclusion The Persian version of 5-D the itching scale is a brief instrument with acceptable reliability and validity. Therefore, the scale could be used by experts, nurses, and other health service providers to evaluate pruritus among Persian speaking hemodialysis patients.

Validity and reliability of the Mandarin version of the Treatment Burden Questionnaire among stroke patients in Mainland China

2021 ◽  
Author(s):  
Qi Zhang ◽  
Ke Zhang ◽  
Miao Li ◽  
Jiaxin Gu ◽  
Xintong Li ◽  
...  
Keyword(s):  
Internal Consistency ◽  
Convergent Validity ◽  
Intraclass Correlation ◽  
Reliability And Validity ◽  
Therapeutic Interventions ◽  
Treatment Burden ◽  
Validity And Reliability ◽  
Stroke Patients ◽  
Retest Reliability ◽  
Test Retest Reliability

Abstract Objectives To examine the validity and reliability of the Mandarin version of the Treatment Burden Questionnaire (TBQ) among stroke patients. Background Stroke patients need long-term management of symptoms and life situation, and treatment burden has recently emerged as a new concept that can influence the health outcomes during the rehabilitation process. Methods The convenience sampling method was used to recruit 187 cases of stroke patients in a tertiary grade hospital in Tianjin for a formal investigation. Item analysis, reliability and validity tests were carried out. The reliability test included internal consistency and test–retest reliability. And as well as content, structure and convergent validity were performed for the validity test. Results Of the 187 completed questionnaires, only 180 (96.3%) were suitable for analysis. According to the experts’ evaluation, the I-CVI of each item was from 0.833 to 1.000, and the S-CVI was 0.967. The exploratory factor analysis yielded three-factor components with a cumulative variation of 53.054%. Convergent validity was demonstrated using measures of Morisky’s Medication Adherence Scale 8 (r = –0.450, P < 0.01). All correlations between items and global scores ranged from 0.403 to 0.638. Internal consistency reliability and test–retest reliability were found to be acceptable, as indicated by a Cronbach’s α of 0.824 and an intraclass correlation coefficient of 0.846, respectively. Conclusions The Mandarin TBQ had acceptable validity and reliability. The use of TBQ in the assessment of treatment burden of stroke survivor may benefit health resources allocation and provide tailor therapeutic interventions to construct minimally disruptive care.

scholarly journals Validity, reliability, and calibration of the physical activity unit 7 item screener (PAU-7S) at population scale

2021 ◽  
Vol 18 (1) ◽  
Author(s):  
Helmut Schröder ◽  
Isaac Subirana ◽  
Julia Wärnberg ◽  
María Medrano ◽  
Marcela González-Gross ◽  
...  
Keyword(s):  
Physical Activity ◽  
Predictive Validity ◽  
Internal Consistency ◽  
Regression Models ◽  
Weighted Kappa ◽  
Linear Regression Models ◽  
Retest Reliability ◽  
Activity Unit ◽  
Test Retest Reliability ◽  
Acceptable Internal Consistency

Abstract Background Validation of self-reported tools, such as physical activity (PA) questionnaires, is crucial. The aim of this study was to determine test-retest reliability, internal consistency, and the concurrent, construct, and predictive validity of the short semi-quantitative Physical Activity Unit 7 item Screener (PAU-7S), using accelerometry as the reference measurement. The effect of linear calibration on PAU-7S validity was tested. Methods A randomized sample of 321 healthy children aged 8–16 years (149 boys, 172 girls) from the nationwide representative PASOS study completed the PAU-7S before and after wearing an accelerometer for at least 7 consecutive days. Weight, height, and waist circumference were measured. Cronbach alpha was calculated for internal consistency. Test-retest reliability was determined by intra-class correlation (ICC). Concurrent validity was assessed by ICC and Spearman correlation coefficient between moderate to vigorous PA (MVPA) derived by the PAU-7S and by accelerometer. Concordance between both methods was analyzed by absolute agreement, weighted kappa, and Bland-Altman statistics. Multiple linear regression models were fitted for construct validity and predictive validity was determined by leave-one-out cross-validation. Results The PAU-7S overestimated MVPA by 18%, compared to accelerometers (106.5 ± 77.0 vs 95.2 ± 33.2 min/day, respectively). A Cronbach alpha of 0.76 showed an acceptable internal consistency of the PAU-7S. Test-retest reliability was good (ICC 0.71 p < 0.001). Spearman correlation and ICC coefficients of MVPA derived by the PAU-7S and accelerometers increased from 0.31 to 0.62 and 0.20 to 0.62, respectively, after calibration of the PAU-7S. Between-methods concordance improved from a weighted kappa of 0.24 to 0.50 after calibration. A slight reduction in ICC, from 0.62 to 0.60, yielded good predictive validity. Multiple linear regression models showed an inverse association of MVPA with standardized body mass index (β − 0.162; p < 0.077) and waist to height ratio (β − 0.010; p < 0.014). All validity dimensions were somewhat stronger in boys compared to girls. Conclusion The PAU-7S shows a good test-retest reliability and acceptable internal consistency. All dimensions of validity increased from poor/fair to moderate/good after calibration. The PAU-7S is a valid instrument for measuring MVPA in children and adolescents. Trial registration Trial registration numberISRCTN34251612.

scholarly journals Test–Retest Reliability of the Genetics and Genomics in Nursing Practice Survey Instrument

2016 ◽  
Vol 24 (1) ◽  
pp. 54-68 ◽  
Author(s):  
Kathleen A. Calzone ◽  
Stacey Culp ◽  
Jean Jenkins ◽  
Sarah Caskey ◽  
Pamela B. Edwards ◽  
...  
Keyword(s):  
Health Care ◽  
Registered Nurses ◽  
Nursing Practice ◽  
Weighted Kappa ◽  
Retest Reliability ◽  
Practice Survey ◽  
Instrument Performance ◽  
Item Responses ◽  
Genetics And Genomics ◽  
Test Retest Reliability

Background and Purpose: Assessment of nursing genomic competency is critical given increasing genomic applications to health care. The study aims were to determine the test–retest reliability of the Genetics and Genomics in Nursing Practice Survey (GGNPS), which measures this competency, and to revise the survey accordingly. Methods: Registered nurses (n = 232) working at 2 Magnet-designated hospitals participating in a multiinstitutional genomic competency study completed the GGNPS. Cohen’s kappa and weighted kappa were used to measure the agreement of item responses between Time 1 and Time 2. Survey items were revised based on the results. Results: Mean agreement for the instrument was 0.407 (range = 0.150–1.000). Moderate agreement or higher was achieved in 39% of the items. Conclusions: GGNPS test–retest reliability was not optimal, and the instrument was refined based on the study findings. Further testing of the revised instrument is planned to assess the instrument performance.

scholarly journals Reliability and validity of a Mediterranean diet and culinary index (MediCul) tool in an older population with mild cognitive impairment

2018 ◽  
Vol 120 (10) ◽  
pp. 1189-1200 ◽  
Author(s):  
Sue Radd-Vagenas ◽  
Maria A. Fiatarone Singh ◽  
Michael Inskip ◽  
Yorgi Mavros ◽  
Nicola Gates ◽  
...  
Keyword(s):  
Cognitive Impairment ◽  
Mild Cognitive Impairment ◽  
Mediterranean Diet ◽  
Reliability And Validity ◽  
Community Dwelling ◽  
Systematic Bias ◽  
Older Individuals ◽  
Retest Reliability ◽  
The Mean ◽  
Test Retest Reliability

AbstractDementia is a leading cause of morbidity and mortality without pharmacologic prevention or cure. Mounting evidence suggests that adherence to a Mediterranean dietary pattern may slow cognitive decline, and is important to characterise in at-risk cohorts. Thus, we determined the reliability and validity of the Mediterranean Diet and Culinary Index (MediCul), a new tool, among community-dwelling individuals with mild cognitive impairment (MCI). A total of sixty-eight participants (66 % female) aged 75·9 (sd 6·6) years, from the Study of Mental and Resistance Training study MCI cohort, completed the fifty-item MediCul at two time points, followed by a 3-d food record (FR). MediCul test–retest reliability was assessed using intra-class correlation coefficients (ICC), Bland–Altman plots and κ agreement within seventeen dietary element categories. Validity was assessed against the FR using the Bland–Altman method and nutrient trends across MediCul score tertiles. The mean MediCul score was 54·6/100·0, with few participants reaching thresholds for key Mediterranean foods. MediCul had very good test–retest reliability (ICC=0·93, 95 % CI 0·884, 0·954, P<0·0001) with fair-to-almost-perfect agreement for classifying elements within the same category. Validity was moderate with no systematic bias between methods of measurement, according to the regression coefficient (y=−2·30+0·17x) (95 % CI −0·027, 0·358; P=0·091). MediCul over-estimated the mean FR score by 6 %, with limits of agreement being under- and over-estimated by 11 and 23 %, respectively. Nutrient trends were significantly associated with increased MediCul scoring, consistent with a Mediterranean pattern. MediCul provides reliable and moderately valid information about Mediterranean diet adherence among older individuals with MCI, with potential application in future studies assessing relationships between diet and cognitive function.

scholarly journals Translation, Cultural Adaptation and Validation of the Simple Shoulder Test to Spanish

2014 ◽  
Vol 2 (12_suppl4) ◽  
pp. 2325967114S0023
Author(s):  
Francisco Arcuri ◽  
Fernando Barclay ◽  
Ivan Nacul
Keyword(s):  
Correlation Coefficient ◽  
Internal Consistency ◽  
Cultural Adaptation ◽  
Reliability And Validity ◽  
Expert Committee ◽  
Internal Reliability ◽  
Simple Shoulder Test ◽  
Retest Reliability ◽  
Test Translation ◽  
Test Retest Reliability

Background: The validation of widely used scales facilitates the comparison across international patient samples. Objective: The objective was to translate, culturally adapt and validate the Simple Shoulder Test into Argentinian Spanish. Methods: The Simple Shoulder Test was translated from English into Argentinian Spanish by two independent translators, translated back into English and evaluated for accuracy by an expert committee to correct the possible discrepancies. It was then administered to 50 patients with different shoulder conditions.Psycometric properties were analyzed including internal consistency, measured with Cronbach´s Alpha, test-retest reliability at 15 days with the interclass correlation coefficient. Results: The internal consistency, validation, was an Alpha of 0,808, evaluated as good. The test-retest reliability index as measured by intra-class correlation coefficient (ICC) was 0.835, evaluated as excellent. Conclusion: The Simple Shoulder Test translation and it´s cultural adaptation to Argentinian-Spanish demonstrated adequate internal reliability and validity, ultimately allowing for its use in the comparison with international patient samples.

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