Article Figures & Data
Figures
- Fig 1.
Total published brain tumor articles by country/region during the 12-year study period (1996–2007), with mean journal impact factor.
- Fig 2.
Number of publications by year for the top 5 countries by publication output. The trend for the United States is upwards. Linear regression curve fitting demonstrates growth in yearly US output at the rate of 11.1 articles per year (P = .006).
- Fig 3.
Specialty contributions to total brain tumor articles. Neurosurgery departments produced the most publications during the study period.
- Fig 4.
Growth in NIH funding of US brain tumor publications by article type. Lines represent the predicted linear growth trend. A data point in the clinical trials graph (year 1997, −15.05) is not depicted. The proportion of brain tumor research funded by the NIH is substantial and growing for general research articles, clinical trials, and overall journal articles.
- Fig 5.
The proportion of US brain tumor research funded by the NIH is similar across specialties, excepting hematology-oncology, which shows a slightly higher percentage of NIH-funded articles.
- Fig 6.
Change in the proportion of NIH-funded articles by clinical specialty. The y-axis is the percentage point change since 1996. The proportion of publications from radiology departments funded by the NIH increased significantly, as demonstrated by the linear regression curve fit.
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