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Dichotomous versus semi-quantitative scoring of ultrasound joint inflammation in rheumatoid arthritis using novel individualized joint selection methods

Clinical Rheumatology volume 36, pages 1137–1141 (2017)Cite this article

Abstract

The aim of the study is to compare the responsiveness of two joint inflammation scoring systems (dichotomous scoring (DS) versus semi-quantitative scoring (SQS)) using novel individualized ultrasound joint selection methods and existing ultrasound joint selection methods. Responsiveness measured by the standardized response means (SRMs) using the DS and the SQS system (for both the novel and existing ultrasound joint selection methods) was derived using the baseline and the 3-month total inflammatory scores from 20 rheumatoid arthritis patients. The relative SRM gain ratios (SRM-Gains) for both scoring system (DS and SQS) comparing the novel to the existing methods were computed. Both scoring systems (DS and SQS) demonstrated substantial SRM-Gains (ranged from 3.31 to 5.67 for the DS system and ranged from 1.82 to 3.26 for the SQS system). The SRMs using the novel methods ranged from 0.94 to 1.36 for the DS system and ranged from 0.89 to 1.11 for the SQS system. The SRMs using the existing methods ranged from 0.24 to 0.32 for the DS system and ranged from 0.34 to 0.49 for the SQS system. The DS system appears to achieve high responsiveness comparable to SQS for the novel individualized ultrasound joint selection methods.

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Acknowledgments

The authors thank colleagues and staff from the study site for the support and help provided in this study.

This study was funded by SingHealth Duke-NUS Academic Medical Center, through the Medicine Academic Clinical Program grant: Nurturing Clinician Scientist Scheme. We would also like to acknowledge the “Estate of Tan Sri Khoo Teck Puat” for the funding support (through the Khoo Clinical Scholars Pilot Award) and the National University of Singapore.

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Affiliations

  1. Department of Rheumatology and Immunology, Singapore General Hospital, Singapore, Singapore

    York Kiat Tan, Li-Ching Chew & Julian Thumboo

  2. Duke-NUS Graduate Medical School, Singapore, Singapore

    York Kiat Tan, Li-Ching Chew & Julian Thumboo

  3. Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore

    York Kiat Tan, Li-Ching Chew & Julian Thumboo

  4. Office of Clinical Sciences, Centre for Quantitative Medicine, Duke-NUS Graduate Medical School, Singapore, Singapore

    John C. Allen Jr & Weng Kit Lye

  5. Leeds Institute of Rheumatic and Musculoskeletal Medicine, University of Leeds, & NIHR Leeds Musculoskeletal Biomedical Research Unit, Leeds, UK

    Philip G. Conaghan

Authors
  1. York Kiat Tan
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  2. John C. Allen Jr
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  3. Weng Kit Lye
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  4. Philip G. Conaghan
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  5. Li-Ching Chew
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  6. Julian Thumboo
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Correspondence to York Kiat Tan.

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This study has been approved by the appropriate ethics committee and all subjects provided their informed consent prior to their inclusion in the study. Details that might disclose the identity of the subjects under study are omitted.

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Tan, Y.K., Allen, J.C., Lye, W.K. et al. Dichotomous versus semi-quantitative scoring of ultrasound joint inflammation in rheumatoid arthritis using novel individualized joint selection methods. Clin Rheumatol 36, 1137–1141 (2017). https://doi.org/10.1007/s10067-016-3432-5

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  • DOI: https://doi.org/10.1007/s10067-016-3432-5

Keywords

  • Joints
  • Rheumatoid arthritis
  • Synovitis
  • Ultrasonography