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Table 3 Common patient-reported outcome instruments used in CTD clinical trials

From: Learnings from clinical trials in patients with connective tissue disease-associated interstitial lung disease

St. George’s Respiratory Questionnaire

Mahler Baseline Dyspnea Index (BDI) and Transition Dyspnea Index (TDI)

Functional Assessment of Chronic Illness Therapy (FACIT)-Dyspnea

Health Assessment Questionnaire-Disability Index (HAQ-DI)

King’s Brief Interstitial Lung Disease Questionnaire (KBILD)

Health Assessment Questionnaire-Disability Index (HAQ-DI)