scholarly journals Pelvimetry in the Teramana goat breed: a comparison between radiography and ultrasound

2019 ◽  
Vol 64 (No. 11) ◽  
pp. 476-481
Author(s):  
I De Amicis ◽  
L Stehlik ◽  
F Del Signore ◽  
S Parrillo ◽  
D Robbe ◽  
...  
Keyword(s):  
Correlation Coefficient ◽  
Intraclass Correlation Coefficient ◽  
Excellent Agreement ◽  
Intraclass Correlation ◽  
The Other ◽  
Farm Animals ◽  
Radiation Hazard ◽  
Intraobserver Agreement ◽  
Goat Breed ◽  
Dorsal Edge

Radiography is routinely used for pelvimetry, but it is not easily accessible for farm animals, while ultrasonographic pelvimetry could be used due to the better accessibility and lack of radiation hazard. Radiographic and ultrasonographic pelvimetry in goats were compared, and three diameters of the pelvis were measured; the narrowest transverse pelvic diameter at the level of the acetabula, from the pecten pubis to the sacral promontorium and from the dorsal edge of the pubis to the coccygeal vertebra. The measurement was performed three times by one observer on both modalities. Intraclass correlation coefficient (ICC) and Bland-Altman analyses were performed. The intraobserver agreement was excellent for all the measurements and modalities in the study. Excellent agreement (ICC 0.96) was achieved for the transverse pelvic diameter. The agreement for the other two diameters was poor. We can conclude that the ultrasonographic pelvimetry of a goat is reliable only in the transverse pelvic diameter just cranial to the pecten pubis.

Learning how to Differ: Agreement and Reliability Statistics in Psychiatry

1995 ◽  
Vol 40 (2) ◽  
pp. 60-66 ◽  
Author(s):  
L. Streiner David
Keyword(s):  
Correlation Coefficient ◽  
Intraclass Correlation Coefficient ◽  
Intraclass Correlation ◽  
Weighted Kappa ◽  
The Other ◽  
Cohen’S Kappa ◽  
Cohen's Kappa ◽  
The Subject

Whenever two or more raters evaluate a patient or student, it may be necessary to determine the degree to which they assign the same label or rating to the subject. The major problem in deciding which statistic to use is the plethora of different techniques which are available. This paper reviews some of the more commonly used techniques, such as Raw Agreement, Cohen's kappa and weighted kappa, and shows that, in most circumstances, they can all be replaced by the intraclass correlation coefficient (ICC). This paper also shows how the ICC can be used in situations where the other statistics cannot be used and how to select the best subset of raters.

scholarly journals The maternal interactive style in shared reading: Building a categorical evaluation system

2019 ◽  
Vol 36 ◽  
Author(s):  
Chrystian da Rosa KROEFF ◽  
Nicole Pandolfo SILVEIRA ◽  
Ana Paula KAFER ◽  
Denise Ruschel BANDEIRA
Keyword(s):  
Standard Deviation ◽  
Correlation Coefficient ◽  
Intraclass Correlation Coefficient ◽  
Excellent Agreement ◽  
Evaluation System ◽  
Intraclass Correlation ◽  
Shared Reading ◽  
Future Studies ◽  
Relationship Of ◽  
The Relationship

Abstract The way of the mother’s interaction with her child is called maternal interactive style. It has been studied in the context of shared reading. This study aimed to formulate a system of evaluation of the interactive style in shared reading through behavior categories. Categories were constructed from previous studies, and then empirically tested. Fifty-two dyads participated. The average age of the mothers was 35.70 (±6.13) years; the children’s ages varied from 22 to 76 months (Mean = 48.59; Standard Deviation = 17.88). The dyads were filmed in a shared reading interaction. The videos were then analyzed. Agreement analyses (intraclass correlation coefficient) were made between observers in order to test the categories. Most of the categories presented good or excellent agreement, indicating that they were well constructed and properly described. We believe that the system may be useful in future studies investigating the relationship of the maternal interactive style in shared reading with other variables involved.

scholarly journals Comparison of Anterior Segment Measurements Obtained by Three Different Devices in Healthy Eyes

2014 ◽  
Vol 2014 ◽  
pp. 1-8 ◽  
Author(s):  
Carmen Lopez de la Fuente ◽  
Ana Sanchez-Cano ◽  
Francisco Segura ◽  
Isabel Pinilla
Keyword(s):  
Healthy Volunteers ◽  
Correlation Coefficient ◽  
Intraclass Correlation Coefficient ◽  
Normal Values ◽  
Intraclass Correlation ◽  
Anterior Segment ◽  
Repeated Measurements ◽  
The Other ◽  
Good Repeatability ◽  
Healthy Eyes

Purpose. To assess the normal values and the repeatability of the Galilei Dual Scheimpflug Analyzer (GDSA), the biometer IOL Master, and the autokerato/refractometer WAM 5500 in anterior segment examinations.Methods. Eighty-eight eyes from 88 healthy volunteers were prospectively and consecutively recruited. The repeatability was assessed, calculating the intraclass correlation coefficient (ICC).Results. The correlations among the repeated measurements showed nearly perfect reliability (ICC > 0.81) for all of the parameters, except corneal astigmatism Galilei (0.79) and WAM (0.68). There were statistically significant differences (P<0.001) between the values of the flat simulated keratometry (SimK) and the steep SimK measured by GDSA and the other methods; however, there were no statistically significant differences for the values obtained with the IOL Master and WAM 5500 (P=0.302andP=0.172, resp.) or between the values of the ACD (P<0.001) and WTW (P=0.007) measured by the IOL Master and GDSA.Conclusions. The anterior segment measurements from the IOL Master and WAM 5500 were highly repeatable, comparable, and well correlated. In healthy young persons, the evaluated parameters had very good repeatability, although significant differences were found between the GDSA and IOL Master and between the GDSA and WAM 5500.

scholarly journals Construction and validation of indicators and respective definitions for the nursing outcome Swallowing Status

2015 ◽  
Vol 23 (3) ◽  
pp. 450-457 ◽  
Author(s):  
Ana Railka de Souza Oliveira ◽  
Thelma Leite de Araujo ◽  
Emilia Campos de Carvalho ◽  
Alice Gabrielle de Sousa Costa ◽  
Tahissa Frota Cavalcante ◽  
...  
Keyword(s):  
Correlation Coefficient ◽  
Intraclass Correlation Coefficient ◽  
Intraclass Correlation ◽  
Minimal Important Difference ◽  
The Other ◽  
Clinical Validation ◽  
Content Validation ◽  
Methodological Study ◽  
Friedman's Test ◽  
Difference Calculation

OBJECTIVE: to develop indicators for the nursing outcome Swallowing Status and the respective conceptual and operational definitions validated by experts and in a clinical setting among patients after having experienced a stroke.METHOD: methodological study with concept analysis and content and clinical validations. The Content Validation Index was verified for the scores assigned by 11 experts to indicators. Two pairs of nurses assessed 81 patients during the clinical validation: one pair used an instrument with definitions and the other used an instrument without definitions. The resulting assessments were compared using Intraclass Correlation Coefficient, Friedman's test, and Minimal Important Difference calculation.RESULTS: All the indicators, with the exception of the indicator Ability to bring food to mouth, presented Content Validation Index above 0.80. The pair using the instrument with definitions presented an Intraclass Correlation Coefficient above 0.80 for all the indicators and similarity was found in all the assessments, according to the Minimal Important Difference calculation. The pair using the instrument without definitions presented a low coefficient (ρ<0.75) for all the indicators.CONCLUSION: the results showed that greater uniformity and accuracy was achieved by the pair of nurses using the conceptual and operational definitions for the indicators of the nursing outcome Swallowing Status.

scholarly journals Biomechanical Measurement of Rabbit Cornea by a Modified Scheimpflug Device

2016 ◽  
Vol 2016 ◽  
pp. 1-6
Author(s):  
Bo Zhang ◽  
Jianjun Gu ◽  
Xiaoxiao Zhang ◽  
Bin Yang ◽  
Zheng Wang ◽  
...  
Keyword(s):  
Bulk Modulus ◽  
Correlation Coefficient ◽  
Intraclass Correlation Coefficient ◽  
Intraclass Correlation ◽  
Anterior Segment ◽  
Intraobserver Reliability ◽  
Rabbit Cornea ◽  
Deformation Response ◽  
Biomechanical Measurements ◽  
Biomechanical Measurement

Purpose. To explore the probability and variation in biomechanical measurements of rabbit cornea by a modified Scheimpflug device.Methods. A modified Scheimpflug device was developed by imaging anterior segment of the model imitating the intact eye at various posterior pressures. The eight isolated rabbit corneas were mounted on the Barron artificial chamber and images of the anterior segment were taken at posterior pressures of 15, 30, 45, 60, and 75 mmHg by the device. The repeatability and reliability of the parameters including CCT, ACD, ACV, and CV were evaluated at each posterior pressure. All the variations of the parameters at the different posterior pressures were calculated.Results. All parameters showed good intraobserver reliability (Cronbach’s alpha; intraclass correlation coefficient,α, ICC > 0.96) and repeatability in the modified Scheimpflug device. With the increase of posterior pressures, the ratio of CCT decreased linearly and the bulk modulus gradually reduced to a platform. The increase of ACD was almost linear with the posterior pressures elevated.Conclusions. The modified Scheimpflug device was a valuable tool to investigate the biomechanics of the cornea. The posterior pressure 15–75 mmHg range produced small viscoelastic deformations and nearly linear pressure-deformation response in the rabbit cornea.

scholarly journals A preliminary study of intensivist-performed DVT ultrasound screening in trauma ICU patients (APSIT Study)

2020 ◽  
Vol 10 (1) ◽  
Author(s):  
Lloyd Roberts ◽  
Tom Rozen ◽  
Deirdre Murphy ◽  
Adam Lawler ◽  
Mark Fitzgerald ◽  
...  
Keyword(s):  
Intensive Care ◽  
Deep Vein Thrombosis ◽  
High Risk ◽  
Correlation Coefficient ◽  
Intraclass Correlation Coefficient ◽  
Major Trauma ◽  
Intraclass Correlation ◽  
Trauma Patients ◽  
Vein Thrombosis ◽  
Deep Vein

Abstract Background Multiple screening Duplex ultrasound scans (DUS) are performed in trauma patients at high risk of deep vein thrombosis (DVT) in the intensive care unit (ICU). Intensive care physician performed compression ultrasound (IP-CUS) has shown promise as a diagnostic test for DVT in a non-trauma setting. Whether IP-CUS can be used as a screening test in trauma patients is unknown. Our study aimed to assess the agreement between IP-CUS and vascular sonographer performed DUS for proximal lower extremity deep vein thrombosis (PLEDVT) screening in high-risk trauma patients in ICU. Methods A prospective observational study was conducted at the ICU of Alfred Hospital, a major trauma center in Melbourne, Australia, between Feb and Nov 2015. All adult major trauma patients admitted with high risk for DVT were eligible for inclusion. IP-CUS was performed immediately before or after DUS for PLEDVT screening. The paired studies were repeated twice weekly until the DVT diagnosis, death or ICU discharge. Written informed consent from the patient, or person responsible, or procedural authorisation, was obtained. The individuals performing the scans were blinded to the others’ results. The agreement analysis was performed using Cohen’s Kappa statistics and intraclass correlation coefficient for repeated binary measurements. Results During the study period, 117 patients had 193 pairs of scans, and 45 (39%) patients had more than one pair of scans. The median age (IQR) was 47 (28–68) years with 77% males, mean (SD) injury severity score 27.5 (9.53), and a median (IQR) ICU length of stay 7 (3.2–11.6) days. There were 16 cases (13.6%) of PLEDVT with an incidence rate of 2.6 (1.6–4.2) cases per 100 patient-days in ICU. The overall agreement was 96.7% (95% CI 94.15–99.33). The Cohen’s Kappa between the IP-CUS and DUS was 0.77 (95% CI 0.59–0.95), and the intraclass correlation coefficient for repeated binary measures was 0.75 (95% CI 0.67–0.81). Conclusions There is a substantial agreement between IP-CUS and DUS for PLEDVT screening in trauma patients in ICU with high risk for DVT. Large multicentre studies are needed to confirm this finding.

Test-Retest-Reliability of Computer-Based Metamorphopsia Measurement in Macular Diseases

2020 ◽  
Author(s):  
Daniela Claessens ◽  
Alexander K. Schuster ◽  
Ronald V. Krüger ◽  
Marian Liegl ◽  
Laila Singh ◽  
...  
Keyword(s):  
Macular Edema ◽  
Correlation Coefficient ◽  
Intraclass Correlation Coefficient ◽  
Intraclass Correlation ◽  
Measuring Method ◽  
Repeated Measurements ◽  
Retest Reliability ◽  
Macular Diseases ◽  
Computer Based ◽  
Test Retest Reliability

AbstractIn this study, the test-retest-reliability as one aspect of reliability of metamorphopsia measurements using a computer-based measuring method was determined in patients with macular diseases. Metamorphopsia amplitude, position, and area were quantified using AMD – A Metamorphopsia Detector software (app4eyes GmbH & Co. KG, Germany) in patients with diabetic, myopic, or uveitic macular edema, intermediate or neovascular age-associated macular degeneration, epiretinal membrane, vitelliform maculopathy, Irvine-Gass syndrome, or macular edema due to venous retinal occlusion. The intraclass correlation coefficient (ICC) was calculated in order to determine the repeatability of two repeated measurements and was used as an indicator of the reliability of the measurements. In this study, metamorphopsia measurements were conducted on 36 eyes with macular diseases. Metamorphopsia measurements made using AMD – A Metamorphopsia Detector software were highly reliable and repeatable in patients with maculopathies. The intraclass correlation coefficient of all indices was excellent (0.95 – 0.97). For diseases of the vitreoretinal interface or macular diseases with intra- or subretinal edema, this metamorphopsia measurement represents a supplement for visual function testing in the clinic, as well as in clinical studies.

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