116 Observer Variation in Quantitative Assessment of Rheumatoid Arthritis. Ii. A Global Scoring System

Kaye, Jeremy J.; Nance, E. Paul; Callahan, Leigh F.; Carroll, Frank E.; Winfield, Alan C.; Earthman, Webb J.; Phillips, Kristine; Fuchs, H A; Pincus, Theodore

doi:10.1097/00004424-198509000-00144

Cited by 1 publication

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“…In an interobserver study using a radiologic scoring system for rheumatoid arthritis, a higher rate of agreement between observers was evident in their joint scores, than in the isolated feature scores (13). In this trial, differences in the feature scores for each observer equilibrated one another, resulting in very similar joint scores.…”

Section: Grading Systems and Observer Variationmentioning

confidence: 74%

“…Consistency is mandatory if a scoring system is to be used for monitoring the progression of a disease and the effects of therapy. Since interobserver variation is generally greater than intraobserver variation, assessment of the former can be used as a test for diagnostic value (4,13).…”

Section: Grading Systems and Observer Variationmentioning

confidence: 99%

“…Perception is influenced by the examination technique, psychologic factors and experience (10). In order to keep variation in the judgement of a feature low, it is essential to exclude vague or indefinite findings; features must be strictly defined to avoid semantic confusion (4,13). Grading of a feature can be facilitated if the different radiologic changes can be measured quantitatively.…”

Section: Grading Systems and Observer Variationmentioning

confidence: 99%

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Reproducibility of the Pettersson Scoring System

et al. 1989

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By means of the Pettersson scoring system, the degree of severity of haemophilic arthropathy in 128 knee, elbow and ankle joints was estimated by 5 radiologists. Their scores varied on average by approximately 3 points. Minimal and maximal joint involvement were scored consistently; exclusion of haemophilic arthropathy was possible with the highest degree of certainty. With regard to changes of a moderate degree agreement was seldom reached. With precisely defined characteristics, a high degree of consistency between observers was evident. Interobserver variation in the scoring was more marked in the ankle joint than in the other joints. Scoring was more consistent with the more experienced observers.

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Section: Grading Systems and Observer Variationmentioning

confidence: 74%

Section: Grading Systems and Observer Variationmentioning

confidence: 99%