LAUSR

Key Points Question How has the reporting of statistical inference in abstracts of major cancer journals evolved over time? Findings In this serial cross-sectional study, reporting of confidence intervals increased over time in most journals, with most abstracts including confidence intervals from 2016 to 2020; however, the proportion of abstracts reporting statistical inference based solely on the terms significant or nonsignificant was 24% during this period. Reporting of results from randomized clinical trials and the requirement to report according to guidelines were associated with a higher prevalence of confidence interval reporting. Meaning These findings suggest that the reporting of statistical inference in abstracts of major cancer journals has improved over time and may continue to improve with the implementation of reporting guidelines.