Division of Nephrology, Department of Medicine, Indiana University School of Medicine and Richard L. Roudebush Veterans Administration Medical Center, 1481 West 10th Street, Indianapolis, IN, USA.
Department of Biostatistics, Indiana University Center for Aging Research, Indiana University School of Medicine, Indianapolis, IN, USA.
J Gen Intern Med. 2022 Jan;37(1):104-109. doi: 10.1007/s11606-021-06659-y. Epub 2021 Mar 2.
The Research Project Grant (R01) is the oldest grant mechanism used by the National Institutes of Health (NIH). Receiving an R01 award is often taken as a sign of scientific success. We presented normative data on multiple productivity and impact metrics for a more objective assessment of funded grants' scientific success.
All initial R01 grants awarded by NIH in the year 2000 were prospectively followed and evaluated using the numbers of publications and citations, as well as the h-indices at the grant level. We examined the variability, time trends, and relations among these metrics to better understand the funded projects' cumulative output and impact.
In the 20 years since initial funding, 4451 R01 grants generated a total of 55,053 publications. These publications were cumulatively cited 3,705,553 times over 736,811 citation years. The median number of publications was 8 (25, 75 percentiles 4, 17) per grant for the entire 20-year duration. The median number of citations and the median h-index were 441 (25, 75 percentiles 156, 1061) and 7 (25, 75 percentiles 4, 13) per grant, respectively. The time courses of publication, citation, and accumulation of h-index were highly variable among the awarded grants. Although the metrics were correlated within an award, they reflected the grant's success in different domains.
Numbers of publications, citations, and h-indices vary greatly among funded R01 grants. When used together, these metrics provide a more complete picture of the productivity and long-term impact of a funded grant.
研究项目资助（R01）是美国国立卫生研究院（NIH）使用的最古老的资助机制。获得 R01 资助通常被视为科学成功的标志。我们提出了多项生产力和影响力指标的规范数据，以便更客观地评估资助项目的科学成功。
前瞻性地跟踪和评估 2000 年 NIH 授予的所有初始 R01 资助，并使用出版物数量和引文以及资助级别上的 h 指数进行评估。我们研究了这些指标的可变性、时间趋势和关系，以更好地了解资助项目的累积产出和影响。
在初始资助后的 20 年中，4451 项 R01 资助共产生了 55053 篇出版物。这些出版物在 736811 个引文年中被累计引用了 3705533 次。在整个 20 年期间，每项资助的平均出版物数量中位数为 8 篇（25%、75%分位数为 4、17）。平均引文数和平均 h 指数中位数分别为 441 篇（25%、75%分位数为 156、1061）和 7 篇（25%、75%分位数为 4、13）。授予的资助中，出版物、引文和 h 指数的积累时间过程高度可变。尽管这些指标在一项资助内相关，但它们反映了资助在不同领域的成功。
受资助的 R01 资助的出版物数量、引文和 h 指数差异很大。当一起使用时，这些指标提供了资助项目生产力和长期影响的更完整图景。
