Departments of Radiation Oncology and Neurological Surgery, University Hospitals Seidman Cancer Center, Cleveland, OH, USA.
Department of Radiation Medicine, Oregon Health and Science University, Portland, OR, USA.
Chin Clin Oncol. 2022 Aug;11(4):31. doi: 10.21037/cco-21-147.
Recent work has demonstrated multiple measures of citation-based scholarly activity. Measures including Hirsch index (h-index), h-index limited to first author manuscripts (hf), h-index limited to first or second author only manuscripts (hs), and g-index have been associated with radiation oncology resident choice of academic versus private practice career. To date, there has been no evaluation of the progression of citation-based scholarly activity during residency.
A list of United States radiation oncology residents from the graduating class of 2022 [postgraduate year two (PGY-2) academic year of 2018-2019] was obtained through internet investigation. Citation-based scholarly activity was collected and calculated from searches of the Scopus bibliometric citation database for h-index, hf, hs, and g-index for each resident as previously described. Calculations were derived in June 2018 for the postgraduate year one (PGY-1) year, and in June 2019 for the PGY-2 year. Fisher's exact test was used for statistical analysis.
Analysis of 195 residents from the 2022 class revealed that the citation-based scholarly activity significantly increased from PGY-1 to PGY-2 for h-index (2.6 to 3.2; P=0.047) and g-index (4.0 to 5.1; P=0.045), but not for hf (1.0 to 1.3; P=0.170) or hs (1.5 to 1.9; P=0.065). Underrepresented minority race/ethnicity (African-American/Hispanic) did not impact the significance of the h-index and g-index findings.
From the PGY-1 to PGY-2 academic year, residents significantly increased in citation-based academic productivity, with an increase in the proportion of residents with a cited first-or-second author manuscript. Further study is necessary to determine how this trend persists in future years.
最近的研究已经证明了多种基于引文的学术活动衡量指标。这些指标包括 Hirsch 指数（h-index）、仅第一作者论文的 h-index（hf）、仅第一或第二作者论文的 h-index（hs）和 g-index，这些指标都与放射肿瘤学住院医师选择学术还是私人执业生涯有关。迄今为止，还没有对住院期间基于引文的学术活动进展进行评估。
通过互联网调查，获得了 2022 年毕业的美国放射肿瘤学住院医师名单（研究生二年级，即 2018-2019 学年）。之前有研究描述过，通过 Scopus 文献计量引文数据库搜索，收集并计算每个住院医师的 h-index、hf、hs 和 g-index 等引文学术活动。在 2018 年 6 月计算了研究生一年级（PGY-1）的成绩，在 2019 年 6 月计算了研究生二年级（PGY-2）的成绩。采用 Fisher 精确检验进行统计学分析。
对 2022 届的 195 名住院医师进行分析，发现 h-index（从 2.6 提高到 3.2；P=0.047）和 g-index（从 4.0 提高到 5.1；P=0.045）的引文学术活动从 PGY-1 到 PGY-2 显著增加，但 hf（从 1.0 提高到 1.3；P=0.170）和 hs（从 1.5 提高到 1.9；P=0.065）没有明显增加。代表性不足的少数族裔（非裔/西班牙裔）并不影响 h-index 和 g-index 研究结果的显著性。
从研究生一年级到研究生二年级学年，住院医师的基于引文的学术产出显著增加，有引用第一或第二作者论文的住院医师比例也有所增加。需要进一步研究来确定这种趋势在未来几年如何持续。
