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Dyspnoea is a common, multifactorial source of functional impairment among patients with dcSSc. Our objective was to assess the reliability, construct validity and responsiveness to change of the Saint George's Respiratory Questionnaire (SGRQ) in patients with early dcSSc participating in a multicentre prospective study.

Reliability, validity and responsiveness to change of the Saint George’s Respiratory Questionnaire in early diffuse cutaneous systemic sclerosis