Presentation of Nonfinal Results of Randomized Controlled Trials at Major Oncology Meetings

PURPOSE: To assess the frequency, implications, and factors associated with reporting nonfinal analyses (NFAs) of randomized controlled trials (RCTs) as abstract publications. METHODS: We identified 138 consecutive reports of RCTs testing systemic therapy for lymphoma, breast, colorectal, or non-small-cell lung cancer published in six major journals between 2000 and 2004. We then searched proceedings of seven major cancer meetings, 1990 to …