scholarly journals Reliability and Validity of Running Cadence and Stance Time Derived from Instrumented Wireless Earbuds

Sensors ◽  
2021 ◽  
Vol 21 (23) ◽  
pp. 7995
Author(s):  
Anouk Nijs ◽  
Peter J. Beek ◽  
Melvyn Roerdink
Keyword(s):  
Concurrent Validity ◽  
Force Plate ◽  
Reliability And Validity ◽  
Head Movements ◽  
Face Validity ◽  
Good Test ◽  
Promising Alternative ◽  
Retest Reliability ◽  
Stance Time ◽  
Test Retest Reliability

Instrumented earbuds equipped with accelerometers were developed in response to limitations of currently used running wearables regarding sensor location and feedback delivery. The aim of this study was to assess test–retest reliability, face validity and concurrent validity for cadence and stance time in running. Participants wore an instrumented earbud (new method) while running on a treadmill with embedded force-plates (well-established method). They ran at a range of running speeds and performed several instructed head movements while running at a comfortable speed. Cadence and stance time were derived from raw earbud and force-plate data and compared within and between both methods using t-tests, ICC and Bland–Altman analysis. Test–retest reliability was good-to-excellent for both methods. Face validity was demonstrated for both methods, with cadence and stance time varying with speed in to-be-expected directions. Between-methods agreement for cadence was excellent for all speeds and instructed head movements. For stance time, agreement was good-to-excellent for all conditions, except while running at 13 km/h and shaking the head. Overall, the measurement of cadence and stance time using an accelerometer embedded in a wireless earbud showed good test–retest reliability, face validity and concurrent validity, indicating that instrumented earbuds may provide a promising alternative to currently used wearable systems.

Developing a measure to assess clinicians’ ability to reflect on key staff–patient dynamics in forensic settings

2021 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Adam Polnay ◽  
Helen Walker ◽  
Christopher Gallacher
Keyword(s):  
Reflective Practice ◽  
Factor Structure ◽  
Internal Consistency ◽  
Self Report ◽  
Face Validity ◽  
Good Test ◽  
Data Set ◽  
Retest Reliability ◽  
Content Type ◽  
Test Retest Reliability

Purpose Relational dynamics between patients and staff in forensic settings can be complicated and demanding for both sides. Reflective practice groups (RPGs) bring clinicians together to reflect on these dynamics. To date, evaluation of RPGs has lacked quantitative focus and a suitable quantitative tool. Therefore, a self-report tool was designed. This paper aims to pilot The Relational Aspects of CarE (TRACE) scale with clinicians in a high-secure hospital and investigate its psychometric properties. Design/methodology/approach A multi-professional sample of 80 clinicians were recruited, completing TRACE and attitudes to personality disorder questionnaire (APDQ). Exploratory factor analysis (EFA) determined factor structure and internal consistency of TRACE. A subset was selected to measure test–retest reliability. TRACE was cross-validated against the APDQ. Findings EFA found five factors underlying the 20 TRACE items: “awareness of common responses,” “discussing and normalising feelings;” “utilising feelings,” “wish to care” and “awareness of complicated affects.” This factor structure is complex, but items clustered logically to key areas originally used to generate items. Internal consistency (α = 0.66, 95% confidence interval (CI) = 0.55–0.76) demonstrated borderline acceptability. TRACE demonstrated good test–retest reliability (intra-class correlation = 0.94, 95% CI = 0.78–0.98) and face validity. TRACE indicated a slight negative correlation with APDQ. A larger data set is needed to substantiate these preliminary findings. Practical implications Early indications suggested TRACE was valid and reliable, suitable to measure the effectiveness of reflective practice. Originality/value The TRACE was a distinctive measure that filled a methodological gap in the literature.

Reliability and Validity of Turkish Myasthenia Gravis-Activities of Daily Living Scale

2020 ◽  
pp. 153944922096107
Author(s):  
Ecem Karanfil ◽  
Yeliz Salcı ◽  
Ayla Fil-Balkan ◽  
Can Ebru Bekircan-Kurt ◽  
Sevim Erdem Özdamar ◽  
...  
Keyword(s):  
Construct Validity ◽  
Myasthenia Gravis ◽  
Activities Of Daily Living ◽  
Daily Living ◽  
Intraclass Correlation ◽  
Reliability And Validity ◽  
Life Questionnaire ◽  
Good Test ◽  
Retest Reliability ◽  
Test Retest Reliability

Linguistic, reliable, and valid secondary efficacy measures are important in clinical settings and studies. The aim of the study is to report test–retest reliability and construct validity of Turkish version of Myasthenia Gravis-Activities of Daily Living Scale (MG-ADL-T) in Myasthenia Gravis (MG) patients. Fifty-two ocular and generalized individuals with MG, applying to rehabilitation center, were included in the study. MG-ADL-T, MG quality-of-life questionnaire (MG-QoL), MG composite (MGC), quantitative MG score (QMGS), and pulmonary function test were administered. Reliability was assessed with intraclass correlation coefficient (ICC) and Cronbach’s alpha. Spearman correlation test and receiver operating characteristic (ROC) analysis were performed for construct validity. MG-ADL-T had fair internal consistency (Cronbach’s α = .67), excellent test–retest reliability (ICC = 0.96) and moderate construct validity (MG-QoL, r = 0.59; QMGS, r = .58; MGC, r = .68). MG-ADL, a unique scale that evaluates activities of daily living (ADL), has good test–retest reliability and construct validity in Turkish MG patients.

scholarly journals A study of the reliability and validity of the Chinese version of the Nociception Coma Scale–Revised

2020 ◽  
Vol 34 (8) ◽  
pp. 1112-1121
Author(s):  
Jing Wang ◽  
Haibo Di ◽  
Wen Hua ◽  
Liwen Cheng ◽  
Zhigang Xia ◽  
...  
Keyword(s):  
Internal Consistency ◽  
Concurrent Validity ◽  
Reliability And Validity ◽  
Disorders Of Consciousness ◽  
Chinese Version ◽  
Rater Reliability ◽  
Validity Data ◽  
Retest Reliability ◽  
Coma Scale ◽  
Test Retest Reliability

Objective: The aim of the study was to check on the reliability and validity of the translated version of Nociception Coma Scale–Revised. Design: Prospective psychometric study. Setting: Rehabilitation and neurology unit in hospital. Subjects: Patients with prolonged disorders of consciousness. Interventions: None. Main measures: The original English version of the Nociception Coma Scale–Revised was translated into Chinese. The reliability and validity were undertaken by trained raters. Intraclass correlation coefficients were used to assess inter-rater reliability and test–retest reliability. Cronbach’s alpha test was used to investigate internal consistency. Spearman’s correlation was used to calculate concurrent validity. The Coma Recovery Scale–revised was used to assess the consciousness of patients. Results: Eighty-four patients were enrolled in the study. Inter-rater reliability of the Chinese version of Nociception Coma Scale–Revised was high for total scores and motor and verbal subscores and good for facial subscores. Test–retest reliability was high for total score and for all subscores. Analysis revealed a moderate internal consistency for subscores. For the concurrent validity, a strong correlation was found between the Nociception Coma Scale–Revised and the Face, Legs, Activity, Cry, and Consolability behavioral scale for all patients. A moderate correlation was found between the Nociception Coma Scale–Revised and the Coma Recovery Scale–revised scores for all patients. Conclusion: The Chinese version of Nociception Coma Scale–Revised has good reliability and validity data for assessing responses to pain in patients with prolonged disorders of consciousness.

Psychometric Properties of the Brief Persian Version of the Difficulties in Emotion Regulation Scale (The DERS-16)

2018 ◽  
Vol 45 (2) ◽  
pp. 135-143 ◽  
Author(s):  
Mehrnesa Shahabi ◽  
Jafar Hasani ◽  
Johan Bjureberg
Keyword(s):  
Factor Analysis ◽  
Emotion Regulation ◽  
Concurrent Validity ◽  
Reliability And Validity ◽  
Good Test ◽  
Persian Version ◽  
Difficulties In Emotion Regulation ◽  
Confirmatory Factor ◽  
Excellent Internal Consistency ◽  
Test Retest Reliability

The Difficulties in Emotion Regulation Scale (DERS) is an established self-reported measure of emotion regulation difficulties. Recently, a brief 16-item version of this scale—the DERS-16—was developed. The goal of the present study was to extend the research on the DERS-16 by evaluating the reliability and validity of the Persian version in a university sample ( N = 201). Results demonstrate that the Persian DERS-16 demonstrated excellent internal consistency, good test–retest reliability, and good concurrent validity. Furthermore, confirmatory factor analysis (CFA) supported the proposed factor structure. Thus, the Persian DERS-16 may offer a valid method for the assessment of overall emotion regulation difficulties as well as for the different facets of the construct.

Screening for Neurocognitive Impairment in Pediatric Cancer Long-Term Survivors

2008 ◽  
Vol 26 (25) ◽  
pp. 4138-4143 ◽  
Author(s):  
Kevin R. Krull ◽  
M. Fatih Okcu ◽  
Brian Potter ◽  
Neelam Jain ◽  
ZoAnn Dreyer ◽  
...  
Keyword(s):  
Cancer Survivors ◽  
Screening Method ◽  
Reliability And Validity ◽  
Parent Rating ◽  
Good Test ◽  
Validity Data ◽  
Retest Reliability ◽  
Test Retest Reliability

Purpose Recent studies suggest that up to 40% of childhood cancer survivors may experience neurocognitive problems, a finding that has led the Children's Oncology Group to recommend regular evaluation. However, for a variety of reasons, including costs, time restraints, health insurance, and access to professional resources, these guidelines are often difficult to implement. We report reliability and validity data on a brief neurocognitive screening method that could be used to routinely screen patients in need of comprehensive follow-up. Patients and Methods Two hundred forty consecutive patients were screened during their annual visits to a long-term survivor clinic using standard neurocognitive measures and brief parent rating. From this total, 48 patients had a second screening, and 52 patients had a comprehensive follow-up evaluation. Test-retest reliability and predictive and discriminative validity were examined. Results Good test-retest reliability was demonstrated, with an overall r = 0.72 and all individual subtest correlations greater than r = 0.40. Although means tended to improve from first to second testing, no significant changes were detected (all P > .10). The screen accurately predicted global intellect (F6,45 = 11.81, P < .0001), reading skills (F6,45 = 4.74, P < .001), and mathematics (F6,45 = 3.35, P < .008). Parent rating was a marginal indicator of global intellect only. Conclusion The brief neurocognitive screening was a better predictor of child functioning than specific parent rating. This brief measure, which can be completed in 30 minutes, is a practical and reliable method to identify cancer survivors in need of further neurocognitive follow-up.

scholarly journals Psychometric Testing of the Support and Control in Birth Scale

2019 ◽  
Author(s):  
Shuyu Liu ◽  
Yu-Ying Lu ◽  
Meei-ling Gau ◽  
Chieh-Yu Liu
Keyword(s):  
Predictive Validity ◽  
Concurrent Validity ◽  
Goodness Of Fit ◽  
Reliability And Validity ◽  
Chinese Version ◽  
External Control ◽  
Good Reliability ◽  
Retest Reliability ◽  
Test Retest Reliability ◽  
And Control

Abstract Background The Support and Control in Birth (SCIB) scale primarily measures the perceived support and control of expectant mothers during childbirth, thereby obtaining an understanding of their birth experiences. The advantages of this scale are its good reliability and validity and that it consolidates birth support and control. However, a Chinese version of the scale has yet to be developed. This study aim is evaluate the validity and reliability of the Chinese version of the Support and Control in Birth Scale (SCIB).Methods A total of 228 postpartum women participated in this study. The Chinese version of the SCIB (C-SCIB) scale was developed through a translation and back translation, followed by an evaluation of its expert validity and content validity. Cronbach's α and test-retest reliability were used to test the internal consistency reliability of the scale. In addition, criterion-related validity (predictive validity and concurrent validity) and construct validity were used to test the validity of the scale.Results 1. The confirmatory factor analysis results showed the overall goodness-of-fit was parsimony fit indices. 2. The reliability was .81, and its test-retest reliability was .96. 3. The criterion-related validity was test the predictive validity and concurrent validity. The predictive validity showed that a significant correlation ( r =.31, p <.01). There was a significant correlation between all the dimensions in the C-SCIB scale, such as internal control ( r =.15, p <.05), external control ( r =.30, p <.01), and support ( r =.21, p <.01). Furthermore, the concurrent validity showed a significant and moderate correlation ( r =.50, p < .01).Conclusion The C-SCIB scale was proven to have good reliability and validity, and thus can be used to measure the degree of support and the locus of control perceived by expectant women during labor.

Reliability and Validity of Instrumented Soccer Equipment

2015 ◽  
Vol 31 (3) ◽  
pp. 195-201 ◽  
Author(s):  
Jonathan S. Akins ◽  
Nicholas R. Heebner ◽  
Mita Lovalekar ◽  
Timothy C. Sell
Keyword(s):  
Ankle Joint ◽  
Motion Analysis ◽  
Sagittal Plane ◽  
Reliability And Validity ◽  
Joint Kinematics ◽  
High Rate ◽  
Lower Extremity Injury ◽  
Good Test ◽  
Retest Reliability ◽  
Test Retest Reliability

Ankle ligament sprains are the most common injury in soccer. The high rate of these injuries demonstrates a need for novel data collection methodologies. Therefore, soccer shoes and shin guards were instrumented with inertial sensors to measure ankle joint kinematics in the field. The purpose of this study was to assess test-retest reliability and concurrent criterion validity of a kinematic assessment using the instrumented soccer equipment. Twelve soccer athletes performed athletic maneuvers in the laboratory and field during 2 sessions. In the laboratory, ankle joint kinematics were simultaneously measured with the instrumented equipment and a conventional motion analysis system. Reliability was assessed using ICC and validity was assessed using correlation coefficients and RMSE. While our design criteria of good test-retest reliability was not supported (ICC > .80), sagittal plane ICCs were mostly fair to good and similar to motion analysis results; and sagittal plane data were valid (r = .90−.98; RMSE < 5°). Frontal and transverse plane data were not valid (r < .562; RMSE > 3°). Our results indicate that the instrumented soccer equipment can be used to measure sagittal plane ankle joint kinematics. Biomechanical studies support the utility of sagittal plane measures for lower extremity injury prevention.

scholarly journals The Psychometric Properties of the Arabic Preschool Activity Card Sort

2017 ◽  
Vol 2017 ◽  
pp. 1-6 ◽  
Author(s):  
Somaya H. Malkawi ◽  
Sana M. N. Abu-Dahab ◽  
Ahmad F. Amro ◽  
Nihad A. Almasri
Keyword(s):  
Preschool Children ◽  
Psychometric Properties ◽  
Internal Consistency ◽  
Concurrent Validity ◽  
Assessment Tool ◽  
Age Groups ◽  
Good Test ◽  
Card Sort ◽  
Retest Reliability ◽  
Test Retest Reliability

Background. The Preschool Activity Card Sort (PACS) is an interview-based assessment tool to measure participation of preschool children with age range from 3 to 6 years. Objective of Study. The purpose of this study was to establish the psychometric properties of the recently translated Arabic PACS (A-PACS). Methods. One hundred fifty-one Jordanian parents participated in the study representing different geographical areas. Children were almost equally distributed between males and females and into three age groups. Construct and concurrent validity were examined as well as the internal consistency of the scale and the test-retest reliability. Findings. The A-PACS was able to differentiate between the participation level of young and old children in the domains of education, community mobility, and low demand leisure of the A-PACS giving evidence to its construct validity and it significantly correlated with some aspects of the Vineland Adaptive Behavior Scale (VABS) giving evidence to its concurrent validity. The A-PACS showed excellent overall internal consistency (α=.859) for all domains and good test-retest reliability (r=.976, p<.001). Conclusion. The A-PACS can be considered as a valid and reliable tool to measure participation of preschool children with normal development from Arabic cultures. Future studies should focus on the validity of the A-PACS for use with children with disabilities.

scholarly journals Psychometric Testing of the Support and Control in Birth Scale 

2020 ◽  
Author(s):  
shuyu Liu ◽  
Yu-Ying Lu ◽  
Meei-ling Gau ◽  
Chieh-Yu Liu
Keyword(s):  
Predictive Validity ◽  
Internal Consistency ◽  
Content Validity ◽  
Concurrent Validity ◽  
Reliability And Validity ◽  
Chinese Version ◽  
Good Reliability ◽  
Retest Reliability ◽  
Test Retest Reliability ◽  
And Control

Abstract Background: The Support and Control in Birth (SCIB) scale primarily measures the perceived support and control of expectant mothers during childbirth, thereby obtaining an understanding of their birth experiences. The advantages of this scale are its good reliability and validity and that it consolidates birth support and control. However, a Chinese version of the scale has yet to be developed. Therefore, this study sought to evaluate the validity and reliability of a Chinese version of the Support and Control in Birth Scale (C-SCIB). Methods: A total of 228 postpartum women participated in this study. The C-SCIB scale was developed through a translation and back translation, followed by an evaluation of its content validity by a group of experts. Cronbach's α internal consistency and test-retest reliability were used to test the reliability of the scale. In addition, criterion-related validity (predictive validity and concurrent validity) and construct validity were used to test the validity of the scale.Results: The C-SCIB scale showed good results in terms of the item-level and scale-level content validity indices. The Cronbach's α internal consistency was 0.81, and its test-retest reliability was 0.96. The confirmatory factor analysis results showed the overall goodness-of-fit was parsimony fit indices. The predictive validity analysis showed a significant positive correlation between the C-SCIB scale and the Questionnaire Measuring Attitudes About Labor and Delivery (r =0.31, p<0.01). Furthermore, the concurrent validity analysis showed a significant and moderate correlation between the C-SCIB and the Bryanton Adaptation of the Nursing Support in Labor Questionnaire (r =0.49, p< 0.01) as well as the Labor Agentry Scale (r =0.51, p< 0.01).Conclusion: The C-SCIB scale was proven to have good reliability and validity, and thus can be used to measure the degree of support and the locus of control perceived by expectant women during labor.

scholarly journals Countermovement Jump Analysis Using Different Portable Devices: Implications for Field Testing

Sports ◽  
2018 ◽  
Vol 6 (3) ◽  
pp. 91 ◽  
Author(s):  
Vincenzo Rago ◽  
João Brito ◽  
Pedro Figueiredo ◽  
Thiago Carvalho ◽  
Tiago Fernandes ◽  
...  
Keyword(s):  
Gold Standard ◽  
Concurrent Validity ◽  
Intraclass Correlation ◽  
Force Platform ◽  
Portable Devices ◽  
Countermovement Jump ◽  
Good Test ◽  
Retest Reliability ◽  
Wide Range ◽  
Test Retest Reliability

The aim of this study was to analyze the concurrent validity, test–retest reliability, and capacity to detect changes of four different portable devices used to measure a wide range of neuromuscular parameters derived from countermovement jump (CMJ). An accelerometric device (Myotest), a jump mat (Ergojump), an optical device (Optojump), and a smartphone app (MyJump) were simultaneously examined for concurrent validity against gold-standard measures (motion-capture system and a force platform). Twenty-two CMJ-derived variables were collected from 15 healthy male subjects (n = 60 CMJs). Contraction time (CT) and eccentric duration (EccD) measurements obtained from the Myotest were moderately to largely associated with and not different from force platform measurements (r = 0.31 to 0.64, ES = 0.11 to 0.18) and showed moderate test-retest reliability (intraclass correlation coefficient (ICC) = 0.92 to 0.97, coefficient of variation (CV) = 3.8 to 8.0%). Flight time (FT) and jump height (JH) from Ergojump, Optojump, and MyJump showed moderate to strong associations with gold-standard measurements (r = 0.57 to 0.98) and good test–retest reliability (ICC = 0.54 to 0.97, CV = 1.8 to 4.2). However, all portable devices underestimated JH (ES = 1.25 to 2.75). Independent of the instrument used, the analyzed CMJ variables showed good capacity to detect changes (standard error of measurement (SEM) < smallest worthwhile change (SWC)), with the exception of rate of force and rate of power development parameters, which showed marginal capacity (SEM > SWC). The Myotest is preferable to measure temporal parameters during ground contact, whereas Ergojump, Optojump, and MyJump devices may be preferable to measure FT and JH, with the Optojump being the most accurate.

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