Fig. 3From: Assessing the level of evidence in the orthopaedic literature, 2013–2018: a review of 3449 articles in leading orthopaedic journalsNumbers (above bars) and percentages of articles, by level of evidence and by orthopaedic trauma (n = 1217) versus orthopaedic nontrauma (n = 2232) topic, published from 2013 to 2018 in the Journal of Orthopaedic Trauma, Clinical Orthopaedics and Related Research, and the Journal of Bone and Joint Surgery, American VolumeBack to article page