From the Warren Alpert Medical School of Brown University, Providence, Rhode Island (SJP, JRP); Department of Surgery, Tripler Army Medical Center, Honolulu, Hawaii (CGY); and Uniformed Services University of the Health Sciences, Bethesda, Maryland (CGY).
Am J Phys Med Rehabil. 2022 Mar 1;101(3):294-297. doi: 10.1097/PHM.0000000000001902.
The Hirsch Index is a measure of academic productivity which captures both the quantity and quality of an author's output. A well-accepted bibliometric, the Hirsch Index still may be influenced by self-citation, which has been assessed in other medical and surgical specialties. This study aims to evaluate research output and self-citation in physiatry, establishing a benchmark for the field, in addition to identifying differences between physical medicine and rehabilitation subspecialties. This study identified physical medicine and rehabilitation residency and fellowship program directors and analyzed the number of publications, citations, self-citations, and h-indices. A total of 169 program directors were identified, and the mean number ± SD of publications, citations, and Hirsch Index for the cohort were 16.7 ± 29.5, 348 ± 753, and 5.7 ± 6.7, respectively. When self-citation was excluded, less than 2% of program directors (3 of 169) had changes in Hirsch Index greater than one integer, and none greater than two integers. The Hirsch Index remained unchanged for 90% (152 of 169). Spinal cord injury fellowship directors had significantly higher mean number of publications (28, P = 0.04), mean number of citations (672, P = 0.03), and Hirsch Index (9.2, P < 0.01; 95% confidence interval). Overall, self-citation is infrequent in physical medicine and rehabilitation, and spinal cord injury directors had more robust academic profiles.
Hirsch 指数是一种衡量学术生产力的指标，它既捕捉了作者产出的数量，也捕捉了其产出的质量。作为一种广受欢迎的文献计量指标，Hirsch 指数仍可能受到自引的影响，而自引在其他医学和外科专业领域已经得到了评估。本研究旨在评估物理治疗学的研究产出和自引情况，为该领域建立一个基准，并确定物理医学与康复的各个亚专业之间的差异。本研究确定了物理医学与康复住院医师和研究员培训计划的主任，并分析了他们的出版物数量、引用量、自引量和 Hirsch 指数。共确定了 169 名计划主任，该队列的平均出版物数量 ± SD、引用量和 Hirsch 指数分别为 16.7 ± 29.5、348 ± 753 和 5.7 ± 6.7。在排除自引后，不到 2%的计划主任（169 人中的 3 人）的 Hirsch 指数变化超过一个整数，没有人的变化超过两个整数。90%（152 人）的 Hirsch 指数保持不变。脊髓损伤研究员培训计划主任的平均出版物数量（28，P = 0.04）、平均引用量（672，P = 0.03）和 Hirsch 指数（9.2，P < 0.01；95%置信区间）显著更高。总体而言，物理医学与康复领域的自引现象并不常见，而脊髓损伤主任则具有更强大的学术形象。
