scholarly journals The inter‐rater and test‐retest reliability of skin thickness and skin elasticity measurements by the DermaLab Combo in healthy participants

2019 ◽  
Vol 25 (6) ◽  
pp. 787-792 ◽  
Author(s):  
Kirsten Peperkamp ◽  
Arico C. Verhulst ◽  
Hanneke J. P. Tielemans ◽  
Harm Winters ◽  
Demi Dalen ◽  
...  
Keyword(s):  
Skin Thickness ◽  
Skin Elasticity ◽  
Retest Reliability ◽  
Test Retest Reliability ◽  
Healthy Participants ◽  
Elasticity Measurements

scholarly journals The Brief International Cognitive Assessment in Multiple Sclerosis (BICAMS): Validation in Arabic and Lebanese Normative Values

2021 ◽  
pp. 1-10
Author(s):  
Hala Darwish ◽  
Pia Zeinoun ◽  
Natali Farran ◽  
Husam Ghusn ◽  
Bassem Yamout ◽  
...  
Keyword(s):  
Multiple Sclerosis ◽  
Psychometric Properties ◽  
Cognitive Assessment ◽  
Healthy Subjects ◽  
Good Evidence ◽  
Normative Values ◽  
Arabic Version ◽  
Retest Reliability ◽  
Test Retest Reliability ◽  
Healthy Participants

Abstract Objective: Multiple sclerosis (MS) is often associated with cognitive deficits. Accurate evaluation of the MS patients’ cognitive performance is essential for diagnosis and treatment recommendation. The Brief International Cognitive Assessment in Multiple Sclerosis (BICAMS), widely used cognitive testing battery, examines processing speed, verbal and visuospatial learning, and memory. Our study aims to examine the psychometric properties of an Arabic version of the BICAMS and to provide normative values in a Lebanese sample. Method: The BICAMS, comprised of the Symbol Digit Modalities Test (SDMT), Brief Visuospatial Memory Test-Revised (BVMT-R), and a newly developed verbal learning/memory test, the Verbal Memory Arabic Test (VMAT), were administered on healthy subjects and MS patients. The sample consisted of 180 healthy individuals, of whom 63 were retested after 2–3 weeks. Forty-three MS patients matched with 43 healthy subjects based on age, sex, and years of education were assessed. A sample of 10 MS patients was also examined on two occasions. Test–retest reliability and criterion-related validity were examined, and regression-based norms were derived. Results: The test–retest correlations showed good evidence of reliability with coefficients ranging between 0.64 and 0.73 in the healthy sample, and between 0.43 and 0.92 in the MS sample. The BICAMS was able to discriminate between MS patients and matched healthy participants on the SDMT and BVMT-R. Normative data were comparable to other studies. Conclusions: This new Arabic version of the BICAMS shows initial good psychometric properties. While good evidence of VMAT’s reliability was shown in the healthy participants, less test–retest reliability in this tool was seen in the MS group, and partial criterion-related validity was evident. This renders further examination of the VMAT. We provide regression-based norms for a Lebanese sample and encourage the use of this battery in both research and clinical settings.

Test–retest reliability of grip strength measurement in full elbow extension to evaluate maximum grip strength

2012 ◽  
Vol 38 (2) ◽  
pp. 183-186 ◽  
Author(s):  
C. Savva ◽  
C. Karagiannis ◽  
A. Rushton
Keyword(s):  
Grip Strength ◽  
Elbow Extension ◽  
Strength Measurement ◽  
Retest Reliability ◽  
Maximum Grip Strength ◽  
Grip Strength Measurement ◽  
Test Retest Reliability ◽  
Standard Error Of Measurement ◽  
Healthy Participants ◽  
Maximum Grip

The objective of this study was to investigate the test–retest reliability of measurement of grip strength in full elbow extension. The grip strengths of 19 healthy participants were measured using the Jamar dynamometer by the same rater on two occasions with an interval of 7 days between measures. Test–retest reliability of grip strength measurement was excellent in full elbow extension and associated with low values of standard error of measurement and small variations in the differences between the two measurements in both testing sessions.

scholarly journals One-week test-retest reliability of nine binocular tests and saccades used in concussion

2019 ◽  
Author(s):  
Stephanie Long ◽  
Tibor Schuster ◽  
Russell Steele ◽  
Suzanne Leclerc ◽  
Ian Shrier
Keyword(s):  
Binocular Vision ◽  
Visual Function ◽  
Ocular Motility ◽  
List Type ◽  
Limits Of Agreement ◽  
Retest Reliability ◽  
Motor Test ◽  
The One ◽  
Test Retest Reliability ◽  
Healthy Participants

AbstractBackgroundTests of binocular vision (BVTs) and ocular motility are used in concussion assessment and management.PurposeTo determine the one-week test-retest reliability of 9 binocular vision tests (BVTs) and a test of saccades proposed for use in concussion management.Study DesignProspective test-retest.MethodsWe examined the one-week test-retest reliability of 9 BVTs in healthy participants: 3D vision (gross stereoscopic acuity), phoria at 30cm and 3m, ability of eyes to move/fixate in-sync (positive and negative fusional vergence at 30cm and 3m, near point of convergence and near point of convergence – break [i.e. double vision]) and 1 ocular motor test, saccades.ResultsWe tested 10 males and 10 females without concussion and a mean age of 25.5 (4.1) years. The intraclass correlations suggest good reliability for phoria 3m (0.88) and gross stereoscopic acuity (0.86), and moderate reliability for phoria 30cm (0.69), near point of convergence (0.54), positive fusional vergence (0.54) and negative fusional vergence (0.66) at 30cm, and near point of convergence - break (0.64). There was poor reliability for saccades (0.34), and both positive and negative fusional vergence (0.49 and 0.43, respectively) at 3m. Limits of agreement (LoA) were best for saccade (±34%) and worst for phoria 30 cm (±121%) and ranged from ±58% to ±70% for 7 of the 8 other tests. The LoA for phoria at 3m were uninformative because measurements for 18 of 20 participants were identical.ConclusionWe found test-retest reliability of the BVTs and saccades ranging from poor to good in healthy participants, with the majority being moderate.Clinical RelevanceFor these vision tests to be clinically useful, the effect of concussion must have a moderate to large effect on the scores of most of the tests.What is known about the subjectConcussions may affect some parts of visual function1-week test-retest reliability for most visual tests is under-studiedWhat this study adds to existing knowledgeWe provide intra-class coefficients and limits of agreement for 10 different visual function tests commonly conducted by clinicians in patients with concussion.

scholarly journals Test–Retest Reliability of the Postural Vertical in Healthy Participants

2017 ◽  
Vol 2 (0) ◽  
pp. n/a ◽  
Author(s):  
Yuji Fujino ◽  
Kazu Amimoto ◽  
Kazuhiro Fukata ◽  
Masahide Inoue ◽  
Kohei Shida ◽  
...  
Keyword(s):  
Retest Reliability ◽  
Test Retest Reliability ◽  
Healthy Participants

scholarly journals Multifrequency magnetic resonance elastography-based tomoelastography of the parotid glands–feasibility and reference values

2021 ◽  
pp. 20210337
Author(s):  
Fabian Henry Jürgen Elsholtz ◽  
Rolf Reiter ◽  
Stephan Rodrigo Marticorena Garcia ◽  
Jürgen Braun ◽  
Ingolf Sack ◽  
...  
Keyword(s):  
Magnetic Resonance ◽  
Reference Values ◽  
Viscoelastic Properties ◽  
Biological Tissues ◽  
Magnetic Resonance Elastography ◽  
Parotid Glands ◽  
Retest Reliability ◽  
Shear Wave Speed ◽  
Test Retest Reliability ◽  
Healthy Participants

Objectives: Accurate radiological differentiation of parotid tumors remains challenging despite recent technical advances in quantitative medical imaging. Multifrequency magnetic resonance elastography (MRE) could provide additional information on viscoelastic properties of normal and abnormal biological tissues. This study investigates the feasibility of MRE of the parotid glands in healthy participants and provides first reference values. Methods: 20 healthy participants underwent multifrequency MRE of both parotid glands at 3 Tesla. Shear waves at frequencies of 25, 30, 40, and 50 Hz were introduced into the participants' heads through the occiput using pressurized-air actuators. Shear wave speed (SWS) and loss angle of the shear modulus (φ) were reconstructed by tomoelastography post-processing as surrogate parameters for tissue stiffness and viscosity or fluidity. 10 participants underwent repeated MRE to determine test–retest reliability based on intraclass correlation coefficients. Results: All MRE datasets acquired could be included in the analysis. Mean SWS was 0.97 ± 0.13 m/s, and mean φ was 0.59 ± 0.05 rad, each for both sides combined and without notable lateral difference (p = 0.88/0.87). Test–retest reliability was good for SWS (ICC = 0.84 for both sides/ICC = 0.77 for the right side/ICC = 0.79 for the left side) and good to excellent for φ(ICC = 0.94/0.86/0.90). Conclusions: Multifrequency MRE of the parotid glands is feasible and reliable. This technique, therefore, is a promising method for investigating the viscoelastic properties of salivary gland tumors in future studies.

scholarly journals ImPact Test-Retest Reliability: Reliably Unreliable?

2013 ◽  
Vol 48 (4) ◽  
pp. 506-511 ◽  
Author(s):  
Jacob Resch ◽  
Aoife Driscoll ◽  
Noel McCaffrey ◽  
Cathleen Brown ◽  
Michael S. Ferrara ◽  
...  
Keyword(s):  
Repeated Measures ◽  
Visual Memory ◽  
Clinical Decision Making ◽  
Retest Reliability ◽  
Time Points ◽  
Group 2 ◽  
Composite Scores ◽  
Test Retest Reliability ◽  
Healthy Participants ◽  
Group 1

Context: Computerized neuropsychological testing is commonly used in the assessment and management of sport-related concussion. Even though computerized testing is widespread, psychometric evidence for test-retest reliability is somewhat limited. Additional evidence for test-retest reliability is needed to optimize clinical decision making after concussion. Objective: To document test-retest reliability for a commercially available computerized neuropsychological test battery (ImPACT) using 2 different clinically relevant time intervals. Design: Cross-sectional study. Setting: Two research laboratories. Patients or Other Participants: Group 1 (n = 46) consisted of 25 men and 21 women (age = 22.4 ± 1.89 years). Group 2 (n = 45) consisted of 17 men and 28 women (age = 20.9 ± 1.72 years). Intervention(s): Both groups completed ImPACT forms 1, 2, and 3, which were delivered sequentially either at 1-week intervals (group 1) or at baseline, day 45, and day 50 (group 2). Group 2 also completed the Green Word Memory Test (WMT) as a measure of effort. Main Outcome Measures: Intraclass correlation coefficients (ICCs) were calculated for the composite scores of ImPACT between time points. Repeated-measures analysis of variance was used to evaluate changes in ImPACT and WMT results over time. Results: The ICC values for group 1 ranged from 0.26 to 0.88 for the 4 ImPACT composite scores. The ICC values for group 2 ranged from 0.37 to 0.76. In group 1, ImPACT classified 37.0% and 46.0% of healthy participants as impaired at time points 2 and 3, respectively. In group 2, ImPACT classified 22.2% and 28.9% of healthy participants as impaired at time points 2 and 3, respectively. Conclusions: We found variable test-retest reliability for ImPACT metrics. Visual motor speed and reaction time demonstrated greater reliability than verbal and visual memory. Our current data support a multifaceted approach to concussion assessment using clinical examinations, symptom reports, cognitive testing, and balance assessment.

scholarly journals Cross-Cultural Adaptation and Validation of the Italian Version of the Dysphagia Handicap Index (I-DHI)

Dysphagia ◽  
2021 ◽  
Author(s):  
Daniela Ginocchio ◽  
Aurora Ninfa ◽  
Nicole Pizzorni ◽  
Christian Lunetta ◽  
Valeria Ada Sansone ◽  
...  
Keyword(s):  
Quality Of Life ◽  
Construct Validity ◽  
Intraclass Correlation ◽  
Oropharyngeal Dysphagia ◽  
Life Questionnaire ◽  
Retest Reliability ◽  
Dysphagia Handicap Index ◽  
Test Retest Reliability ◽  
Healthy Participants

AbstractThe Dysphagia Handicap Index (DHI) is a valid Health-related Quality of Life (HRQOL) questionnaire for patients with oropharyngeal dysphagia (OD) of heterogeneous etiologies. The study aimed at crossculturally translating and adapting the DHI into Italian (I-DHI) and analyzing I-DHI reliability, validity, and interpretability. The I-DHI was developed according to Beaton et al. 5-stage process and completed by 75 adult OD patients and 166 healthy adults. Twenty-six patients filled out the I-DHI twice, 2 weeks apart, for test–retest reliability purposes. Sixty-two patients completed the Italian-Swallowing Quality of Life Questionnaire (I-SWAL-QoL) for criterion validity analysis. Construct validity was tested comparing I-DHI scores among patients with different instrumentally assessed and self-rated OD severity, comparing patients and healthy participants and testing Spearman’s correlations among I-DHI subscales. I-DHI interpretability was assessed and normative data were generated. Participants autonomously completed the I-DHI in maximum 10 min. Reliability proved satisfactory for all I-DHI subscales (internal consistency: α > .76; test–retest reliability: intraclass correlation coefficient > .96, k = .81). Mild to moderate correlations (− .26 ≤ ρ ≤ − .72) were found between I-DHI and I-SWAL-QoL subscales. Construct validity proved satisfactory as (i) moderate to strong correlations (.51 ≤ ρ ≤ .90) were found among I-DHI subscales; (ii) patients with more severe instrumentally or self-assessed OD reported higher I-DHI scores (p < .05); and (iii) OD patients scored higher at I-DHI compared to healthy participants (p < .05). Interpretability analyses revealed a floor effect for the Emotional subscale only and higher I-DHI scores (p < .05) for healthy participants > 65 years. In conclusion, the I-DHI is a reliable and valid HRQOL tool for Italian adults with OD.

scholarly journals Validity and Reliability of Limits-of-Stability Testing: A Comparison of 2 Postural Stability Evaluation Devices

2011 ◽  
Vol 46 (6) ◽  
pp. 600-606 ◽  
Author(s):  
Marie L. Pickerill ◽  
Rod A. Harter
Keyword(s):  
Construct Validity ◽  
Postural Stability ◽  
Intraclass Correlation ◽  
Retest Reliability ◽  
Limits Of Stability ◽  
Directional Control ◽  
Computerized Posturography ◽  
Wide Range ◽  
Test Retest Reliability ◽  
Healthy Participants

Context: A lack of published comparisons between measures from commercially available computerized posturography devices and the outcome measures used to define the limits of stability (LOS) makes meaningful interpretation of dynamic postural stability measures difficult. Objectives: To compare postural stability measures between and within devices to establish concurrent and construct validity and to determine test-retest reliability for LOS measures generated by the NeuroCom Smart Balance Master and the Biodex Balance System. Design: Cross-sectional study. Setting: Controlled research laboratory. Patients or Other Participants: A total of 23 healthy participants with no vestibular or visual disabilities or lower limb impairments. Intervention(s): The LOS were assessed during 2 laboratory test sessions 1 week apart. Main Outcome Measure(s): Three NeuroCom LOS variables (directional control, endpoint excursion, and movement velocity) and 2 Biodex LOS variables (directional control, test duration). Results: Test-retest reliability ranged from high to low across the 5 LOS measures (intraclass correlation coefficient [2,k] = 0.82 to 0.48). Pearson correlations revealed 4 significant relationships (P &lt; .05) between and within the 2 computerized posturography devices (r = 0.42 to −0.65). Conclusions: Based on the wide range of intraclass correlation values we observed for the NeuroCom measures, clinicians and researchers alike should establish the reliability of LOS testing for their own clinics and laboratories. The low to moderate reliability outcomes observed for the Biodex measures were not of sufficient magnitude for us to recommend using the LOS measures from this system as the gold standard. The moderate Pearson interclass correlations we observed suggest that the Biodex and NeuroCom postural stability systems provided unique information. In this study of healthy participants, the concurrent and construct validity of the Biodex and NeuroCom LOS tests were not definitively established. We recommend that this study be repeated with a clinical population to further explore the matter.

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