scholarly journals Reliability and Validity of Electro-Goniometric Range of Motion Measurements in Patients with Hand and Wrist Limitations

2016 ◽  
Vol 10 (1) ◽  
pp. 190-205 ◽  
Author(s):  
Siamak Bashardoust Tajali ◽  
Joy C. MacDermid ◽  
Ruby Grewal ◽  
Chris Young
Keyword(s):  
Intraclass Correlation ◽  
Reliability And Validity ◽  
Correlation Coefficients ◽  
Cross Sectional ◽  
Intraclass Correlation Coefficients ◽  
Significant Difference ◽  
Passive Flexion ◽  
Quick Dash ◽  
And Function ◽  
Limited Motion

Study Design: Cross-sectional reliability and validity study. Purpose: 1. To determine intrarater, interrater and inter instrument reliabilities and validity of two digital electro goniometry to measure active wrist/finger range of motions (ROMs) in patients with limited motion. 2. To determine intrarater and interrater reliabilities of digital goniometry to measure torques of PIP passive flexion of the index finger in patients with limited motion. Methods: The study was designed in a randomized block plan on 44 patients (24 women, 20 men) with limited wrist or hand motions. Two experienced raters measured active wrist ROMs, and active and passive index PIP flexion using two digital goniometers. All measures were repeated by one rater 2-5 days after the initial measurements. The reliability measures were analyzed using Intraclass Correlation Coefficients (ICCs) and the construct validity was determined by correlation coefficients analysis between sub measures of scores; patient rated pain and function (PRWE) and quick Disabilities of the Arm, Shoulder and Hand (quick DASH) scores. Results: The intrarater, interrater and inter instrument reliabilities were high in most ROM measures (range 0.64-0.97) for both types of electro-goniometers. The 95% limit of agreements and Bland and Altman plots did not show progressive changes. There was a significant difference in force application between the raters when performing passive ROM measures for PIP index, but the same rater produced consistent force. Most of the NK and J-Tech ROM measures were moderately correlated with the patient rated pain and function scores (range 0.32-0.63).

scholarly journals Assessment of reliability and validity of the 5-scale grading system of the point-of-care immunoassay for tear matrix metalloproteinase-9

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Minjeong Kim ◽  
Ja Young Oh ◽  
Seon Ha Bae ◽  
Seung Hyeun Lee ◽  
Won Jun Lee ◽  
...  
Keyword(s):  
Matrix Metalloproteinase ◽  
Calibration Curve ◽  
Point Of Care ◽  
Interobserver Reliability ◽  
Intraclass Correlation ◽  
Reliability And Validity ◽  
Correlation Coefficients ◽  
Grading System ◽  
Intraclass Correlation Coefficients ◽  
The Difference

AbstractWe evaluated the reliability and validity of the 5-scale grading system to interpret the point-of-care immunoassay for tear matrix metalloproteinase (MMP)-9. Six observers graded red bands of photographs of the readout window in MMP-9 immunoassay kit (InflammaDry) two times with 2-week interval based on the 5-scale grading system (i.e. grade 0–4). Interobserver and intraobserver reliability were evaluated using intraclass correlation coefficients. The interobserver agreements were analyzed according to the severity of tear MMP-9 expression. To validate the system, a concentration calibration curve was made using MMP-9 solutions with reference concentrations, then the distribution of MMP-9 concentrations was analyzed according to the 5-scale grading system. Both intraobserver and interobserver reliability was excellent. The readout grades were significantly correlated with the quantified colorimetric densities. The interobserver variance of readout grades had no correlation with the severity of the measured densities. The band density continued to increase up to a maximal concentration (i.e. 5000 ng/mL) according to the calibration curve. The difference of grades reflected the change of MMP-9 concentrations sensitively, especially between grade 2 and 4. Together, our data indicate that the subjective 5-scale grading system in the point-of-care MMP-9 immunoassay is an easy and reliable method with acceptable accuracy.

scholarly journals A Quantitative Comparison of Multispectral Refraction Topography and Autorefractometer in Young Adults

2021 ◽  
Vol 8 ◽  
Author(s):  
Yunru Liao ◽  
Zhenlan Yang ◽  
Zijing Li ◽  
Rui Zeng ◽  
Jing Wang ◽  
...  
Keyword(s):  
Correlation Coefficient ◽  
Pearson Correlation ◽  
Intraclass Correlation ◽  
Correlation Coefficients ◽  
Cross Sectional Study ◽  
Cross Sectional ◽  
High Agreement ◽  
Intraclass Correlation Coefficients ◽  
Repeatability And Reproducibility ◽  
The Mean

Purpose: Purpose of this study is to evaluate the measuring consistency of central refraction between multispectral refraction topography (MRT) and autorefractometry.Methods: This was a descriptive cross-sectional study including subjects in Sun Yat-sen Memorial Hospital from September 1, 2020, to December 31, 2020, ages 20 to 35 years with a best corrected visual acuity of 20/20 or better. All patients underwent cycloplegia, and the refractive status was estimated with autorefractometer, experienced optometrist and MRT. We analyzed the central refraction of the autorefractometer and MRT. The repeatability and reproducibility of values measured using both devices were evaluated using intraclass correlation coefficients (ICCs).Results: A total of 145 subjects ages 20 to 35 (290 eyes) were enrolled. The mean central refraction of the autorefractometer was −4.69 ± 2.64 diopters (D) (range −9.50 to +4.75 D), while the mean central refraction of MRT was −4.49 ± 2.61 diopters (D) (range −8.79 to +5.02 D). Pearson correlation analysis revealed a high correlation between the two devices. The intraclass correlation coefficient (ICC) also showed high agreement. The intrarater and interrater ICC values of central refraction were more than 0.90 in both devices and conditions. At the same time, the mean central refraction of experienced optometrist was −4.74 ± 2.66 diopters (D) (range −9.50 to +4.75D). The intra-class correlation coefficient of central refraction measured by MRT and subjective refraction was 0.939.Conclusions: Results revealed that autorefractometry, experienced optometrist and MRT show high agreement in measuring central refraction. MRT could provide a potential objective method to assess peripheral refraction.

scholarly journals Using Smart Bracelets to Assess Heart Rate Among Students During Physical Education Lessons: Feasibility, Reliability, and Validity Study (Preprint)

2020 ◽  
Author(s):  
Jiangang Sun ◽  
Yang Liu
Keyword(s):  
Heart Rate ◽  
Physical Education ◽  
Intraclass Correlation ◽  
Reliability And Validity ◽  
Correlation Coefficients ◽  
Left Wrist ◽  
Intraclass Correlation Coefficients ◽  
Estimate Reliability ◽  
Left And Right ◽  
The Right

BACKGROUND An increasing number of wrist-worn wearables are being examined in the context of health care. However, studies of their use during physical education (PE) lessons remain scarce. OBJECTIVE We aim to examine the reliability and validity of the Fizzo Smart Bracelet (Fizzo) in measuring heart rate (HR) in the laboratory and during PE lessons. METHODS In Study 1, 11 healthy subjects (median age 22.0 years, IQR 3.75 years) twice completed a test that involved running on a treadmill at 6 km/h for 12 minutes and 12 km/h for 5 minutes. During the test, participants wore two Fizzo devices, one each on their left and right wrists, to measure their HR. At the same time, the Polar Team2 Pro (Polar), which is worn on the chest, was used as the standard. In Study 2, we went to 10 schools and measured the HR of 24 students (median age 14.0 years, IQR 2.0 years) during PE lessons. During the PE lessons, each student wore a Polar device on their chest and a Fizzo on their right wrist to measure HR data. At the end of the PE lessons, the students and their teachers completed a questionnaire where they assessed the feasibility of Fizzo. The measurements taken by the left wrist Fizzo and the right wrist Fizzo were compared to estimate reliability, while the Fizzo measurements were compared to the Polar measurements to estimate validity. To measure reliability, intraclass correlation coefficients (ICC), mean difference (MD), standard error of measurement (SEM), and mean absolute percentage errors (MAPE) were used. To measure validity, ICC, limits of agreement (LOA), and MAPE were calculated and Bland-Altman plots were constructed. Percentage values were used to estimate the feasibility of Fizzo. RESULTS The Fizzo showed excellent reliability and validity in the laboratory and moderate validity in a PE lesson setting. In Study 1, reliability was excellent (ICC>0.97; MD<0.7; SEM<0.56; MAPE<1.45%). The validity as determined by comparing the left wrist Fizzo and right wrist Fizzo was excellent (ICC>0.98; MAPE<1.85%). Bland-Altman plots showed a strong correlation between left wrist Fizzo measurements (bias=0.48, LOA=–3.94 to 4.89 beats per minute) and right wrist Fizzo measurements (bias=0.56, LOA=–4.60 to 5.72 beats per minute). In Study 2, the validity of the Fizzo was lower compared to that found in Study 1 but still moderate (ICC>0.70; MAPE<9.0%). The Fizzo showed broader LOA in the Bland-Altman plots during the PE lessons (bias=–2.60, LOA=–38.89 to 33.69 beats per minute). Most participants considered the Fizzo very comfortable and easy to put on. All teachers thought the Fizzo was helpful. CONCLUSIONS When participants ran on a treadmill in the laboratory, both left and right wrist Fizzo measurements were accurate. The validity of the Fizzo was lower in PE lessons but still reached a moderate level. The Fizzo is feasible for use during PE lessons.

Infant with Clefts Observation Outcomes Instrument (iCOO): A New Outcome for Infants and Young Children with Orofacial Clefts

2021 ◽  
pp. 105566562110403
Author(s):  
Todd C. Edwards ◽  
Carrie L. Heike ◽  
Kathleen A. Kapp-Simon ◽  
Salene M. Jones ◽  
Brian G. Leroux ◽  
...  
Keyword(s):  
Cleft Lip ◽  
Intraclass Correlation ◽  
Primary Caregivers ◽  
Correlation Coefficients ◽  
Measurement Properties ◽  
Cross Sectional ◽  
Scale Scores ◽  
Health Domains ◽  
And Function ◽  
The Impact

Objective We evaluated the measurement properties for item and domain scores of the Infant with Clefts Observation Outcomes Instrument (iCOO). Design Cross-sectional (before lip surgery) and longitudinal study (preoperative baseline and 2 days and 2 months after lip surgery). Setting Three academic craniofacial centers and national online advertisements. Participants Primary caregivers with an infant with cleft lip with or without cleft palate (CL  ±  P) scheduled to undergo primary lip repair. There were 133 primary caregivers at baseline, 115 at 2 days postsurgery, and 112 at 2 months postsurgery. Main Outcome Measure(s) Caregiver observation items ( n = 61) and global impression of health and function items ( n = 8) across eight health domains. Results Mean age at surgery was 6.0 months (range 2.7-11.8 months). Five of eight iCOO domains have scale scores, with Cronbach’s alphas ranging from 0.67 to 0.87. Except for the Facial Skin and Mouth domain, iCOO scales had acceptable intraclass correlation coefficients (ICCs) ranging from 0.76 to 0.84. The internal consistency of the Global Impression items across all domains was 0.90 and had acceptable ICCs (range 0.76-0.91). Sixteen out of 20 (nonscale) items had acceptable ICCs (range 0.66-0.96). As anticipated, iCOO scores 2 days postoperatively were generally lower than baseline and scores 2 months postsurgery were consistent with baseline or higher. The iCOO took approximately 10 min to complete. Conclusions The iCOO meets measurement standards and may be used for assessing the impact of cleft-related treatments in clinical research and care. More research is needed on its use in various treatment contexts.

scholarly journals The Reliability and Validity of the Loadsol® under Various Walking and Running Conditions

Sensors ◽  
2019 ◽  
Vol 19 (2) ◽  
pp. 265 ◽  
Author(s):  
Kristen Renner ◽  
DS Williams ◽  
Robin Queen
Keyword(s):  
Reliable Method ◽  
Loading Rate ◽  
Reaction Force ◽  
Intraclass Correlation ◽  
Reliability And Validity ◽  
Correlation Coefficients ◽  
Validity And Reliability ◽  
Intraclass Correlation Coefficients ◽  
Single Sensor ◽  
Force Data

The assessment of loading during walking and running has historically been limited to data collection in laboratory settings or with devices that require a computer connection. This study aims to determine if the loadsol®—a single sensor wireless insole—is a valid and reliable method of assessing force. Thirty (17 male and 13 female) recreationally active individuals were recruited for a two visit study where they walked (1.3 m/s) and ran (3.0 and 3.5 m/s) at a 0%, 10% incline, and 10% decline, with the visits approximately one week apart. Ground reaction force data was collected on an instrumented treadmill (1440 Hz) and with the loadsol® (100 Hz). Ten individuals completed the day 1 protocol with a newer 200 Hz loadsol®. Intraclass correlation coefficients (ICC3,k) were used to assess validity and reliability and Bland–Altman plots were generated to better understand loadsol® validity. Across conditions, the peak force ICCs ranged from 0.78 to 0.97, which increased to 0.84–0.99 with the 200 Hz insoles. Similarly, the loading rate ICCs improved from 0.61 to 0.97 to 0.80–0.96 and impulse improved from 0.61 to 0.97 to 0.90–0.97. The 200 Hz insoles may be needed for loading rate and impulse in running. For both walking and running, the loadsol® has excellent between-day reliability (>0.76).

scholarly journals Alberta Infant Motor Scale: Reliability and Validity When Used on Preterm Infants in Taiwan

2000 ◽  
Vol 80 (2) ◽  
pp. 168-178 ◽  
Author(s):  
Suh-Fang Jeng ◽  
Kuo-Inn Tsou Yau ◽  
Li-Chiou Chen ◽  
Shu-Fang Hsiao
Keyword(s):  
Preterm Infants ◽  
Interrater Reliability ◽  
Physical Therapist ◽  
Intraclass Correlation ◽  
Reliability And Validity ◽  
Correlation Coefficients ◽  
Intraclass Correlation Coefficients ◽  
Scale Reliability ◽  
Scale Scores ◽  
Acceptable Reliability

Abstract Background and Purpose. The goal of this study was to examine the reliability and validity of measurements obtained with the Alberta Infant Motor Scale (AIMS) for evaluation of preterm infants in Taiwan. Subjects. Two independent groups of preterm infants were used to investigate the reliability (n=45) and validity (n=41) for the AIMS. Methods. In the reliability study, the AIMS was administered to the infants by a physical therapist, and infant performance was videotaped. The performance was then rescored by the same therapist and by 2 other therapists to examine the intrarater and interrater reliability. In the validity study, the AIMS and the Bayley Motor Scale were administered to the infants at 6 and 12 months of age to examine criterion-related validity. Results. Intraclass correlation coefficients (ICCs) for intrarater and interrater reliability of measurements obtained with the AIMS were high (ICC=.97–.99). The AIMS scores correlated with the Bayley Motor Scale scores at 6 and 12 months (r=.78 and .90), although the AIMS scores at 6 months were only moderately predictive of the motor function at 12 months (r=.56). Conclusion and Discussion. The results suggest that measurements obtained with the AIMS have acceptable reliability and concurrent validity but limited predictive value for evaluating preterm Taiwanese infants.

Reproducibility of Acoustic Rhinometry in the Investigation of Occupational Rhinitis

2007 ◽  
Vol 21 (4) ◽  
pp. 474-477 ◽  
Author(s):  
Roberto Castano ◽  
Gilles Thériault ◽  
Denyse Gautrin ◽  
Heberto Ghezzo ◽  
Carole Trudeau ◽  
...  
Keyword(s):  
Objective Assessment ◽  
Intraclass Correlation ◽  
Correlation Coefficients ◽  
Acoustic Rhinometry ◽  
Nasal Patency ◽  
Cross Sectional ◽  
Occupational Rhinitis ◽  
Intraclass Correlation Coefficients ◽  
Objective Monitoring ◽  
Coefficients Of Variation

Background To diagnose occupational rhinitis, it is mandatory to conduct an objective assessment of changes in nasal patency during specific inhalation challenge (SIC). The reproducibility of acoustic rhinometry measurements in the setting of occupational challenges has never been examined. This study assessed the reproducibility of acoustic rhinometry during SIC investigation of occupational rhinitis. Methods Twenty-four subjects underwent acoustic rhinometry measurements during SIC investigation of occupational rhinitis. Subjects attended 3–6 days of SIC within a week by means of a realistic or closed-circuit apparatus methodology Results All of the within-day intraclass correlation coefficients (ICCs) for nasal volume (2–5 cm) and minimum cross-sectional area (MCA) based on a different number of measurements (2–7) were above 0.85; all of the coefficients of variation (CVs) for the same parameters were low (below 10%). The between-day CVs based on different numbers of SIC sessions ranged from 8.0 to 8.8% and from 6.8 to 8.8% for nasal volume and MCA, respectively. The between-day ICCs ranged from 0.80 to 0.88 and from 0.83 to 0.94 for nasal volume and MCA, respectively. Conclusion Acoustic rhinometry showed good within- and between-day reproducibility and can be recommended for the objective monitoring of nasal patency during SIC investigating occupational rhinitis.

Reliability and Validity of the Posture and Fine Motor Assessment of Infants

1989 ◽  
Vol 9 (5) ◽  
pp. 259-272 ◽  
Author(s):  
Jane Case-Smith
Keyword(s):  
Intraclass Correlation ◽  
Reliability And Validity ◽  
Correlation Coefficients ◽  
Fine Motor ◽  
Motor Assessment ◽  
Intraclass Correlation Coefficients ◽  
Highly Correlated ◽  
Peabody Developmental Motor Scales ◽  
The Individual ◽  
Test Retest Reliability

The Posture and Fine Motor Assessment of Infants (PFMAI) (Case-Smith, 1987) is a newly developed instrument for assessing the quality of motor function in infants. The test measures components of posture and fine motor control as they first develop. The purpose of this study was to support the test's reliability and validity. Interrater reliability, analyzed with intraclass correlation coefficients (ICCs), was high (.989 for total scores). Test-retest reliability, measured by ICCs, was .853 and .913 for the two test sections. The PFMAI demonstrated concurrent validity with the Peabody Developmental Motor Scales, Revised (Folio & Fewell, 1983) (correlations were .673 and .829 for the individual sections). Scores on the PFMAI were highly correlated with the infant's ages (.892 to .941); this finding provided one indication of construct validity.

Using Pedometers to Estimate Ambulatory Physical Activity in Vietnam

2011 ◽  
Vol 8 (1) ◽  
pp. 52-61 ◽  
Author(s):  
Au Bich Thuy ◽  
Leigh Blizzard ◽  
Michael Schmidt ◽  
Costan Magnussen ◽  
Emily Hansen ◽  
...  
Keyword(s):  
Physical Activity ◽  
Concurrent Validity ◽  
Intraclass Correlation ◽  
Correlation Coefficients ◽  
Population Based ◽  
Work Activities ◽  
Intraclass Correlation Coefficients ◽  
Significant Difference ◽  
Day Of The Week ◽  
Population Based Survey

Background:Pedometer measurement of physical activity (PA) has been shown to be reliable and valid in industrialized populations, but its applicability in economically developing Vietnam remains untested. This study assessed the feasibility, stability and validity of pedometer estimates of PA in Vietnam.Methods:250 adults from a population-based survey were randomly selected to wear Yamax pedometers and record activities for 7 consecutive days. Stability and concurrent validity were assessed using intraclass correlation coefficients (ICC) and Spearman correlation coefficients.Results:Overall, 97.6% of participants provided at least 1 day of usable recordings, and 76.2% wore pedometers for all 7 days. Only 5.2% of the sample participants were involved in work activities not measurable by pedometer. The number of steps increased with hours of wear. There was no significant difference between weekday and weekend in number of steps, and at least 3 days of recordings were required (ICC of the 3 days of recordings: men 0.96, women 0.97). Steps per hour were moderately correlated (men r = .42, women r = .26) with record estimates of total PA.Conclusions:It is feasible to use pedometers to estimate PA in Vietnam. The measure should involve at least 3 days of recording irrespective of day of the week.

scholarly journals Is the BESTest at Its Best? A Suggested Brief Version Based on Interrater Reliability, Validity, Internal Consistency, and Theoretical Construct

2012 ◽  
Vol 92 (9) ◽  
pp. 1197-1207 ◽  
Author(s):  
Parminder K. Padgett ◽  
Jesse V. Jacobs ◽  
Susan L. Kasser
Keyword(s):  
Interrater Reliability ◽  
Intraclass Correlation ◽  
Correlation Coefficients ◽  
Cross Sectional Study ◽  
Cross Sectional ◽  
Test Items ◽  
Intraclass Correlation Coefficients ◽  
Eyes Closed ◽  
Functional Reach ◽  
Hip Abductor

Background The Balance Evaluation Systems Test (BESTest) and Mini-BESTest are clinical examinations of balance impairment, but the tests are lengthy and the Mini-BESTest is theoretically inconsistent with the BESTest. Objective The purpose of this study was to generate an alternative version of the BESTest that is valid, reliable, time efficient, and founded upon the same theoretical underpinnings as the original test. Design This was a cross-sectional study. Methods Three raters evaluated 20 people with and without a neurological diagnosis. Test items with the highest item-section correlations defined the new Brief-BESTest. The validity of the BESTest, the Mini-BESTest, and the new Brief-BESTest to identify people with or without a neurological diagnosis was compared. Interrater reliability of the test versions was evaluated by intraclass correlation coefficients. Validity was further investigated by determining the ability of each version of the examination to identify the fall status of a second cohort of 26 people with and without multiple sclerosis. Results Items of hip abductor strength, functional reach, one-leg stance, lateral push-and-release, standing on foam with eyes closed, and the Timed “Up & Go” Test defined the Brief-BESTest. Intraclass correlation coefficients for all examination versions were greater than .98. The accuracy of identifying people from the first cohort with or without a neurological diagnosis was 78% for the BESTest versus 72% for the Mini-BESTest or Brief-BESTest. The sensitivity to fallers from the second cohort was 100% for the Brief-BESTest, 71% for the Mini-BESTest, and 86% for the BESTest, and all versions exhibited specificity of 95% to 100% to identify nonfallers. Limitations Further testing is needed to improve the generalizability of findings. Conclusions Although preliminary, the Brief-BESTest demonstrated reliability comparable to that of the Mini-BESTest and potentially superior sensitivity while requiring half the items of the Mini-BESTest and representing all theoretically based sections of the original BESTest.

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