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Showing 1 to 18 of 18 for “"Kappa Statistics"”.
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Evaluation of the use of the modified Huddart Bodenham & EUROCRAN yardstick for the assessment of surgical outcome for unilateral cleft lip and palate
… intra- and inter-examiner reproducibility using kappa statistics for EUROCRAN yardstick indicated wide variability (range 0.33 to 0.95) for maxillary arch constriction. The intra- and inter-examiner reproducibility using kappa statistics for EUROCRAN Yardstick indicated poor reproducibility …
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Human scalp hair: geometry, biochemistry, growth parameters and mechanical characteristics
… classification. Reliability was assessed using Kappa statistics. Characteristics assessed included mechanical properties (miniature tensile tester), growth rate and hair density (TrichoScan® trichogram), biochemistry (Vanillin assay for lipids and Fourier Transform Infrared adsorption) and …
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The ergonomic evaluation of laptop use in university students: the development and test-retest reliability of the student laptop use and musculoskeletal posture questionnaire
… twice within a seven-day interval. Weighted kappa statistics were computed to describe the reliability. 86.0% of eligible students agreed to participate and 59.1% completed both questionnaires. The reliability of 72.5% of questions was Kw ≥0.60 and 29.4% of questions was Kw ≥0.80. The SLUMP …
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Observer variation in detecting lymphadenopathy on chest radiography
… absent or equivocal, and expressed as weighted Kappa statistics. Results. Weighted Kappa for the six pairs of observers ranged from 0.14 (95% Cl 0.02-0.30) to 0.52 (95% CT 0.35-0.69). After a 3-month interval intra-observer agreement ranged from 0.44 (95% Cl 0.25-0.62) to 0.71 (95% CI …
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The relationship between patient, carer and staff perceptions of need in an assertive community treatment team in South Africa
… and Negative Syndrome Scale respectively. Kappa statistics were computed to assess agreement in the participants' perspectives.
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Efficient Unbiased Estimating Equations for Analyzing Structured Correlation Matrices
… measures, which include odds ratios, kappa statistics, and relative risks besides correlations. Knowing and understanding these ranges is important for developing efficient estimation methods. We study estimation of the familial correlations using a probit model and stochastic …
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Assessment of Human Alveolar Bone Density by Using Volumetric CT Machine
… and inter-machine subjective readings with Kappa statistics value 0.32 and 0.36, respectively. Reproducibility of subjective scoring by Lekholm and Zarb Classification of images from CBCT is not statistically different (P > 0.05) from that of images from QCT. This cone-beam CT machine could …
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Qualitative Evaluation of Data Compression in Real-time Ultrasound Imaging
… comprised of inter-rater reliability tests using kappa statistics and three way Analysis of Variance (ANOVA) using General Linear Models (GLM). Objective testing were performed using histogram analysis and estimation of peak signal to noise ratios.</p> <p>The kappa scores for all bandwidths …
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Clinicopathological correlation in erythema induratum
… adjusted their diagnoses accordingly. Fleiss Kappa statistics were applied to determine inter-rater variability. A multi-variate logistic regression model determined the clinical and histological features that contribute most to an accurate diagnosis. Results - After assessing the clinical …
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Comparing the Utility and Reliability of Two Current Suicide-Related Nomenclatures
… hypotheses. C-CASA’s reliability, as measured by kappa statistics, was 0.59, while the Silverman nomenclature’s was 0.45; this was more than a 0.1 difference in C-CASA’s favor. On the 7-point Likert-type scale of the perceived clinical utility questionnaire, the Silverman nomenclature received …
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Mid-upper arm circumference and nutritional risk in macrocephalic pediatric patients
… better identified presence of malnutrition. Statistics: Two-way contingency tables were used to summarize the relationships between each pair of assessments of whether a child is malnourished. Agreement between the methods was evaluated using kappa statistics and percent agreement. Analyses …
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The Development and Evaluation of Toxic Syndromes and the Assessment of an Integrated Approach to Syndromic Surveillance with the Palmetto Poison Center
… of staff) to test the reliability call codings. Kappa statistics and linear regression models were calculated to evaluate significance in agreements.</p> <p>Results: GNS and SNS variables captured more calls in respiratory syndrome missed by the clinical effects variable. A significant reduction …
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Impervious Surfaces Mapping Using High Resolution Satellite Imagery
… data generated by manual classification, with Kappa statistics and Zonal statistics to select the most appropriate image processing techniques for impervious surface mapping. The performance of selected image processing techniques was enhanced by incorporating Soil Brightness Index (SBI) and …
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Characterization of Canine Leishmaniasis in the United States: Pathogenesis, Immunological Responses, and Transmission of an American Isolate of Leishmania infantum
… K39 (rK39) immunoassay were evaluated. Kappa statistics revealed that PCR had the highest level of agreement with culture and cytology results although the rK39 dipstick assay consistently identified more experimentally infected dogs. Flow cytometry revealed no significant differences …
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Measuring hand washing behaviour in low income settings: methodological and validity issues
… testing and calculation of kappa statistics to assess validity.<br/><br/>In conclusion, this research demonstrates that self report hand washing measures are subject to over<br/>reporting. Structured observation provides useful information on directly observed hand washing …
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Evaluation of the utility of specific CXR features for diagnosis of pulmonary tuberculosis in young children using multiple readers
… The sampled data were t hen analysed using kappa statistics. RESULTS: The overall combined agreement for airway compression (by presumed lymphadenopathy) was 0.5%. Five % of the CXR's had soft tissue densities reflecting lymphadenopathy on the frontal view and 5% on the lateral view. The …
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The agreement, reliability and accuracy of a subjective-rating for technique measurement in rugby union after video-based training
… the proportion of observed agreement (Po) and Kappa statistics (K). Criterion validity (accuracy) was measured using the proportion of observed agreement (Po) by comparing the raters’ assessments to a criterion. Between groups comparisons for technical proficiency scores and accuracy were done …
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The dynamic interaction of land use and transport in a highly fragmented city: the case of Cape Town, South Africa
… out from 2005 to 2010 to evaluate the model. Kappa statistic and its associated variants were applied to assess the ability of the land use model block to reproduce land use patterns while the EMME model and previous transport studies for Cape Town were used to evaluate the transport model. …