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Showing 1 to 20 of 117 for “"Intraclass correlation"”.
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Extending the Utility of Ant Colony Optimization Through the Incorporation of an Intraclass Correlation Coefficient to Assess for Rater Consistency
… utility of ACO by incorporating the intra-class correlation coefficient (ICC) as an optimization criterion in seeking an optimal (or near-optimal) measurement model solution. The introduction of ICC to ACO procedures is intended to address data that features multiple observations of the same …
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Statistical analysis of familial correlations.
Inferences for familial (intraclass and interclass) correlations are considered for unbalanced familial data from multivariate normal populations. The most commonly used familial correlation is that between siblings (without regard to gender), called intraclass or sib-sib correlation coefficient. …
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Properties Of Logistic Regression Models With Correlated Observations
… maximum likelihood estimator, unless both the intraclass correlation of the covariate and the residual intraclass correlation are close to zero, the usual, dummy variables and conditional estimators are, in general, not highly efficient. In particular, the asymptotic relative efficiency of the …
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A Study of Relationships Between Family Members Using Familial Correlations
<p>Familial correlations measure the resemblance between family members and are used in many fields of study including epidemiology, genetics, heredity, and psychology. Here, an analysis of familial correlations where male and female children of the same family can have different correlations in …
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Methods of estimating repeatability and most probable producing ability in beef cattle
… estimates were first obtained for each herd by intraclass correlation. These values were 0.34, 0.00, 0.35 and 0.14. The individual herd sums of squares and degrees of freedom were then pooled to obtain an overall estimate of 0.31. Repeatability was also calculated by the correlation of adjacent …
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Imaging of abdominal aortic aneurysm disease activity and implications for endovascular aneurysm repair
… microcalcification activity (AMA) measurements (intraclass correlation co-efficient, 0.88). These, sequentially improved with the application of thresholding (intraclass correlation coefficient 0.93, 95% confidence interval 0.89–0.95) and variable diameter (intraclass correlation coefficient …
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A Bayesian multilevel model for women unemployment in South Africa
… null and random coe cient multilevel models. The Intraclass Correlation Coe cient (ICC) proposes that there is an understandable di erence in women unemployment level over various provinces of South Africa. The results of the classical MLR and the Bayesian MLR indicate in ated commonness for women …
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Three-dimensional Surface Changes in the Mandible during Growth and Development
… and quantified. The intra- and inter-rater intraclass correlation coefficients for surface generation (0.94 and 0.93, respectively) and superimposition (0.96 and 0.82, respectively) demonstrate the reliability of the techniques. The findings of this study support the theories of bone …
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Interrater and intrarater reliability of the Acumar™ digital inclinometer for measurement of cervical range of motion in children with torticollis
… measurements separated by a brief time interval. Intraclass correlation coefficients were calculated for interrater reliability and for intrarater reliability using SPSS 15.0 for Windows. Intrarater reliability demonstrated acceptable limits for one tester for measurements in 3 directions of …
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Muscle Strength, Motor Units, and Aging
… absolute reliability (limits of agreement and intraclass correlation). The interrelationship between muscle strength, motor units, and aging was determined by an analysis of covariance (ANCOVA) that tested heterogeneity of regression slopes (moderation analysis). Results: The test-retest …
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A pilot comparison of first morning versus 24-hour urinary deoxynivalenol in UK adults
… DON intake compared to 24-hour collections. The intraclass correlation coefficient (ICC) was computed to evaluate variability in DON concentrations and generalized estimating equation (GEE) models were used to assess the relationship between collection types. Greater between-person variability …
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Electrodermal Activity as an Indicator of Sensory Processing in Typically Developing Children and Children with Autism Spectrum Disorders
… <p>measures were used to calculate ICC (Intraclass Correlation Coefficient)</p> <p>reliability in 14 children with ASD and 18 TD children.</p> <p>Results: ICC reliability during rest phase (tonic) for both groups was good to moderate (.65 - .73). ICC reliability during response to …
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Accuracy of Volumetric Analysis Software Packages in Assessment of Tooth Volume Using CBCT
… software measurements of the segmented data. The intraclass correlation coefficient was used for the reliability tests. Friedman’s two-way analysis of variance was used to com-pare the volume obtained from the software programs.</p>
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Prediction of Root Form Using Crown Data: Mandibular Left First Premolar
… Statistical analysis was performed using intraclass correlation tests and Euclidean Distance Matrix Analysis (EDMA), a technique used to compare biologic shapes using landmark points, to compare the 3D root shapes and dimensions. Spearman’s rho test was used to determine relationships …
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Test Re-Test Reliability of Brachial Artery Flow-Mediated Dilation in Healthy Adults
… demonstrated moderate to strong reliability (intraclass correlation coefficient [ICC] = 0.73, P=0.004; CV = 24.7%). Additionally, reliability for average baseline diameter (CV = 4.5%; ICC = 0.95; p<0.001) and max hyperemic diameter (CV = 4.8%; ICC = 0.93, p<0.001) were very strong. Conclusion: …
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Radiographic Union Score for Tibia (RUST) scoring system in adult diaphyseal femoral fractures treated with intramedullary nailing: an assessment of interobserver and intraobserver reliability
… a mean score of 11.3 ± 1.3. The interobserver intraclass correlation coefficient (ICC) was 0.87 (95% CI, 0.81-0.92) and the intraobserver ICC was 0.91 (95% CI, 0.88-0.94), which indicated excellent agreement. Conclusion This study demonstrated that the RUST system can be used reliably in the …
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The Development of an Instrument to Measure Teacher Education Candidates' Dispositions
… reliability, the statistical analysis included intraclass correlation coefficient and Cronbach's alpha correlation coefficient estimates. Validity evidence based on test content and internal structure was examined. The subject pool for each pilot test was formed from matched pairs of student …
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Evaluation of Apical, Coronal and Occlusal Form Diffrences with Conventional Orthodontic Treatment
… selection was repeated on 10 subjects and an intraclass correlation (ICC) was used to assess reproducibility. Results: The mandibular apical arch showed statistically significant change in geometric form from T1 to T2. No statistically significant change was observed in the mandibular coronal …
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Módulo tangente do tendão calcanear em corredores
… myotendine junction with ultrasonography. The Intraclass Correlation Coefficient (ICC) and the Typical Measurement Error (TME) were applied to verify the reliability of all parameters, where the coefficients obtained indicated reliability ranging from reasonable to excellent. No significant …
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Quantitative fit analysis of acromion fracture plating systems using three-dimensional anatomical modelling
… the best in Type II fractures. An inter-observer intraclass correlation coefficient (ICC) agreement of 0.974 was obtained. Conclusion The available commercial acromial plating system fails to provide adequate congruency and fit for fixation. Clavicular plates were superior alternative implants. 3D …
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