Key PointsQuestionWhat are the characteristics of meta-analyses published in oncology journals, and what are the study characteristics associated with favorable outcomes?FindingsThis scoping review of 93 meta-analyses found that many meta-analyses report on a drug, include randomized studies, and often have an author funded by industry. Methodologic quality was no different between studies with study or author industry funding and those with independent research, but industry funding was associated with the tone of the authors’ conclusion.MeaningThe multiple factors associated with having a positive study conclusion suggest that future research should be performed to elucidate reasons for more favorable conclusions among studies with study or author industry funding.