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UFMG Sydenham's chorea rating scale (USCRS): reliability and consistency
Antônio Lúcio Teixeira1, Débora P Maia, Francisco Cardoso
1Movement Disorders Clinic, Faculty of Medicine and Hospital das Clínicas, Federal University of Minas Gerais (UFMG), Belo Horizonte, Brazil.
Summary
A new scale, the Universidade Federal de Minas Gerais (UFMG) Sydenham's Chorea Rating Scale (USCRS), quantifies Sydenham's chorea symptoms and functional impact. This reliable tool aids in assessing patients with SC and related disorders.
Area of Science:
- Neurology
- Pediatrics
- Clinical Assessment
Background:
- Sydenham's chorea (SC) is experiencing renewed research interest.
- Existing assessment tools for SC signs and symptoms lack validity and reliability.
Purpose of the Study:
- To introduce and validate the Universidade Federal de Minas Gerais (UFMG) Sydenham's Chorea Rating Scale (USCRS).
- To provide a quantitative measure for daily living activities, behavioral abnormalities, and motor function in SC patients.
Main Methods:
- Development of the USCRS, a 27-item scale with scores ranging from 0 to 4.
- Evaluation of the scale's interrater reliability and internal consistency using data from 84 subjects (ages 4.9–33.6 years).
Main Results:
- The USCRS demonstrated strong interrater reliability and internal consistency.
- The scale effectively captures the severity of clinical features and functional impact in SC.
Conclusions:
- The USCRS is a valid and reliable instrument for assessing Sydenham's chorea.
- This scale offers a promising tool for clinical evaluation and research in both children and adults with SC.