Reporting of health-related quality of life in randomized controlled trials involving palliative systemic therapy for esophagogastric cancer: a systematic review.

"Conflict of interest The authors declare that there is no conflict of interest."

"Funding This work was supported by a grant from the Dutch Cancer Society (KWF), grant number UVA 2014-7000."

"The study protocol was not registered in advance. The online databases PubMed, EMBASE, and the Cochrane Central Register of Controlled Trials (CENTRAL) as well as meeting abstracts from the American Society of Clinical Oncology (ASCO) and the European Society for Medical Oncology (ESMO) were searched for RCTs on palliative systemic therapy for advanced esophagogastric cancer up to February 2017. Details regarding this search can be found in Online Resource 1 in the Electronic supplementary material (ESM). Prospective registration databases such as clinical trials.gov were not searched, as our aim was to assess published reports. For the same reason, no contact with study authors was sought for additional information. Titles, abstracts, and full texts were screened by EtV and NHM. Disagreements were discussed with JJvK until consensus was reached."