Fig. 1From: Patient-reported outcome instruments used in immune-checkpoint inhibitor clinical trials in oncology: a systematic reviewPRISMA chart mapping the number of records identified, selected, and included for final analysis. Twenty-eight full-text articles reporting PRO results referring to 26 ICI-CTs, 9 study protocols, and 319 conference abstracts stating the use of PROÂ measures in ICI-CTs, were retained for data extractionBack to article page