Replication studies in the TBI literature. (A) The y-axis is the number of publications and the x-axis is the year. Within the 57 210 papers in the TBI literature based upon the WoS search, 550 matched our search term (replica*). Further review revealed that the data set included 40 CRs and 85 CEs, with 425 remaining papers that matched the search terms but did not fit into either of these categories. The data are graphed by binning the total in each year from 1984 to 2020. (B) The y-axis is the number of publications and the x-axis is the year. In the inset, the y-axis is the percentage of the total number of publications that are replication matches and the x-axis is the year. NOTE: the box inset represents the proportion of studies matching the replication search to the total number of publications. The elevation in the 1980s is likely attributable to the sparse publication rate.