Assessment of Disagreement: A New Information-Based Approach

Costa-Santos, Cristina; Antunes, Luís; Souto, André; Bernardes, João

doi:10.1016/j.annepidem.2010.02.011

Cited by 30 publications

(29 citation statements)

References 13 publications

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“…12 The internal consistency of the QoR-15 T was also evaluated by using Cronbach's alpha (α) for the global QoR-15. A Cronbach's alpha coefficient of 0.70 to 0.95 was considered to be acceptable.…”

Section: Methodsmentioning

confidence: 99%

Quality of Recovery after Anesthesia: Validation of the Portuguese Version of the “Quality of Recovery 15” Questionnaire

et al. 2015

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Background:The "Quality of Recovery 15" questionnaire is used for the study of quality recovery after anesthesia. The aim of this study was to validate the Portuguese version of "Quality of Recovery 15" questionnaire. Material and Methods:After study approval by the institutional ethics committee, an observational and cohort prospective study was conducted on patients scheduled for elective surgery from June to August 2013. The "Quality of Recovery 15" questionnaire was translated in accordance with available guidelines. The "Quality of Recovery 15" Portuguese version was used before surgery (T0) and 24h postoperatively (T1) on 170 patients. Patients who were unable to give informed consent or had cognitive impairment were excluded. Poor quality of recovery was defined for "Quality of Recovery 15" score at T1 lower than the mean "Quality of Recovery 15" score minus 1 standard deviation. Reliability and observer disagreement was assessed using interclass correlation. Non-parametric tests were used for comparisons.Results: There was a negative correlation between "Quality of Recovery 15" score and time spent in the postanesthesia care (ρ = −0.264, p = 0.004) and length of hospital stay (ρ = −0.274, p = 0.004). Thirty-two patients (19%) had poor quality of recovery. Patients with poor quality of recovery had more frequently diabetes mellitus and hypertension and they were taking antidepressants drugs more frequently. Patients with poor quality of recovery were more frequently submitted to combined anesthesia and less frequently to general anesthesia and locoregional anesthesia (p = 0.008). The questionnaire had a good internal consistency and test-retest reliability was good. Discussion: The Portuguese version of the "Quality of Recovery 15" showed a good correlation with the original. Conclusion:This questionnaire appears to be an accurate and reliable assessment for quality of recovery.

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Section: Methodsmentioning

confidence: 99%

Quality of Recovery after Anesthesia: Validation of the Portuguese Version of the “Quality of Recovery 15” Questionnaire

et al. 2015

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“…A new information-based measure of disagreement (IBMD) was proposed in [7] to cope with the fact that no available strategy allowed to compare the degree of agreement, without the influence of the reliability. This approach provides a method based on Shannon's entropy to compare the degree of disagreement among different populations, as it is here the case by considering several sampling frequencies.…”

Section: Reliability Estimation Methodsmentioning

confidence: 99%

“…The reliability (R) reports the overall consistency of a measure and evaluates the precision of the measurements in terms of the ability to distinguish between subjects or groups [4,6]. Nevertheless, the currently used reliability indexes, Lin's concordance correlation coefficient (CCC) and intraclass correlation coefficient (ICC), are also affected by any disagreement over the measures [7], thus R and A should be interpreted in a combined manner.…”

Section: Introductionmentioning

confidence: 99%

Reliability Loss with Sampling Rate Reduction

Sousa

Almeida

Silva

et al. 2015

2015 Computing in Cardiology Conference (CinC)

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High sampling frequency is not usually available in hospital monitoring systems, what can limit the usefulness of the data, namely for repolarization measures.In this work the reliability of beat-to-beat measures using low sampling frequency is quantified with respect to the original high sampling rate. ECG recordings originally at 1000 Hz, including intensive care patients data, were downsampled to 500 Hz and to 250 Hz. Automatic delineation was applied to extract beat-to-beat intervals. The reliability was measured considering concordance correlation coefficient (CCC) and intraclass correlation coefficient (ICC); the Information-based measure of disagreement (IBMD) was used for agreement quantification.High reliability and low disagreement were generally found. Using the conventional interpretation excellent consistency was found at 250 HZ for more than 68%, 50%, 50% and 58% of the cases for RR, RT, QT and QT c , respectively. Results indicate that at 250 Hz RR, RT, QT and QT c measures are still reliable compared with the values at 1000 Hz.

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“…The IBMD is a metric system that was calculated based on the amount of information obtained from the differences between 2 variables (Costa- Santos et al, 2010). The IBMD gives a normalized value ranging from 0 to 1, with '0' showing no information in the differences between 2 variables.…”

Section: Discussionmentioning

confidence: 99%

“…The Information Based Measure of Disagreement (IBMD) was also calculated (Costa-Santos et al, 2010). The IBMD is a metric system that was calculated based on the amount of information obtained from the differences between 2 variables (Costa- Santos et al, 2010).…”

Section: Discussionmentioning

confidence: 99%

The development of a fast method for recording Schroeder-phase masking functions

Rahmat

O’Beirne

2015

Hearing Research

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Schroeder-phase masking complexes have been used in many psychophysical experiments to examine the phase curvature of cochlear filtering at characteristic frequencies, and other aspects of cochlear nonlinearity. In a normal nonlinear cochlea, changing the "scalar factor" of the Schroederphase masker from -1 through 0 to +1 results in a marked difference in the measured masked thresholds, whereas this difference is reduced in ears with damaged outer hair cells. Despite the valuable information it may give, one disadvantage of the Schroeder-phase masking procedure is the length of the test -using the conventional three-alternative forced-choice technique to measure a masking function takes around 45 minutes for one combination of probe frequency and intensity. As an alternative, we have developed a fast method of recording these functions which uses a Békésy tracking procedure. Testing at 500 Hz in normal hearing participants, we demonstrate that our fast method: i) shows good agreement with the conventional method; ii) shows high test-retest reliability; and iii) shortens the testing time to 8 minutes.

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Assessment of Disagreement: A New Information-Based Approach

Cited by 30 publications

References 13 publications

Quality of Recovery after Anesthesia: Validation of the Portuguese Version of the “Quality of Recovery 15” Questionnaire

Quality of Recovery after Anesthesia: Validation of the Portuguese Version of the “Quality of Recovery 15” Questionnaire

Reliability Loss with Sampling Rate Reduction

The development of a fast method for recording Schroeder-phase masking functions

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