Reliability and Minimal Clinically Important Differences of FVC. Results from the Scleroderma Lung Studies (SLS-I and SLS-II)

FVC% has acceptable test-retest reliability, and we have provided the MCID estimates for FVC% in SSc-ILD based changes at 12 months from baseline in two clinical trials. Clinical trial registration available at www.clinicaltrials.gov, IDs NCT00004563 and NCT00883129.