Fig. 4From: A review of the challenges, learnings and future directions of home handheld spirometry in interstitial lung diseaseExamples of FVC measurements in individual patients, using home handheld spirometry and site spirometry, in a STARLINER, b STARMAP and c the pirfenidone in uILD study. For home handheld spirometry, baseline was calculated as the average of assessments collected during the first 7Â days. FVC forced vital capacity, L litres, uILD unclassifiable interstitial lung diseaseBack to article page