Ying 2014

Methods	Secondary citation(s) NA Language of publication Chinese, translated to English Study design Retrospective study Study centre(s) Peking University Cancer Hospital Country People’s Republic of China Median follow‐up time (range) 29.4 months (12.2‐52.4)* *For the whole population (n = 50), but only 35 participants underwent interim PET
Participants	Number of included participants Total: 50 With interim PET: 35 Inclusion criteria Newly diagnosed HL according to the 2008 WHO Hematopoietic and Lymphoid Tissue Classification Exclusion criteria Not reported Consent Not reported Recruitment period September 2009 to December 2012 Age (range, in years) 33 (14‐74) Ethnic group(s) Not reported Stages of disease All stages Comorbidities Not reported Therapy regimen ABVD or BEACOPP with or without radiotherapy
Prognostic factor(s)	Prognostic factor(s) Interim PET Definition of prognostic factor(s) From the top of the head to the middle thigh, the entire lower extremity was scanned if necessary Timing of prognostic factor measurement After 2 to 4 cycles of treatment Method for measurement (use of specific scale and cut‐off) Interpretation of scans by 2 experienced PET‐CT physicians Scale and cut‐off not reported Was the same definition and method for measurement used in all participants? Not reported Were prognostic factor(s) assessed blinded for outcome(s), and for each other (if relevant)? Not reported
Notes	Translated from Chinese to English by Yu‐Tian Xiao. Conflict of interest Not reported Funding This study was funded by Natural Science Foundation of China (NSFC) grant no. 81470328 and Youth Fund of NSFC grant no. 81600162, 81600130.