PMID: 26817178Jan 29, 2016Paper

Inter- and Intra-Observer Reliability of Modified Rodnan Skin Score Assessment in Thai Systemic Sclerosis Patients: A Validation for Multicenter Scleroderma Cohort Study

Journal of the Medical Association of Thailand = Chotmaihet Thangphaet
Chingching FoocharoenRatanavadee Nanagara

Abstract

Assessment of the severity of skin tightness by the modified Rodnan skin score (mRSS) for systemic sclerosis (SSc) has been found feasible, valid, and reliable. Despite being a major clinical outcome, it has not yet been validated by Scleroderma Research Group. To (a) determine the inter-observer variability vis-à-vis mRSS assessment by members ofthe Scleroderma Research Group before and after mRSS-assessment training by an experienced rheumatologist and (b) determine intra-observer variability. Between June and August 2013, we conducted a descriptive study of Thai adult SSc patients and all rheumatologists in the Scleroderma Research Group at Srinagarind Hospital, Khon Kaen University, Northeast Thailand. Eleven rheumatologists assessed the mRSS of 22 SSc patients three times (i.e., before and after training, and eight weeks after training). The intra-class correlation coefficient (ICC) and its 95% CI were estimated at week 8 after training. The mean and standard deviation (SD) of mRSS for inter-observer variability analysis was slightly decreased from before training, after training (by an experienced rheumatologist), and at week 8 after training (17.3 ± 11.9, 16.5 ± 11.1, and 16.2 ± 10.3, respectively). Intra-observer variab...Continue Reading

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