In my most recent post, I noted that the percentage of the overall NIH budget going to R01-equivalent awards dropped from 43.8% in FY1998 to 37.2% in FY2003 to 34.7% in FY2013. Here, I present more details about the trends that have led to this drop. Below is a plot of expenditures in different categories from FY1998 to FY2013.
In addition to R01 equivalent grants (R01s, R37s, R29s), the categories include Research Centers, R&D Contracts, Intramural Research, Training (Ts and Fs), Career Awards, Research Project Grants (RPGs) other than R01-equivalent grants, SBIR/STTR grants, Other Research (e.g. R25s), and Research Management and Supports (e.g. extramural staff salaries, other administrative costs, review costs).
The categories other that R01 equivalent grants are shown with an expanded scale below:
The graphs show that the percentage of R01 equivalent fell in two different phases. The first phase occurred during the NIH doubling whereas the second phase occurred over the subsequent decade.
The percentages and differences in the first and second phases in the various categories are tabulated below:
|RPG Non-R01 equiv||11.2||14.4||15.9||3.2||1.5|
Note that the categories do not total 100% as some small categories such as construction are not shown.
During the first phase, the percentage of the overall NIH budget going to R01 equivalent awards fell by 6.6%. Over this period, the amount going to other categories of RPGs grew by 3.2% (to be discussed below), the percentage going to R&D Contracts grew by 2.7%, and the percentage going to Other Research grew by 1.4%.
During the second phase, the percentage going to R01 equivalent awards fell by an additional 2.5%. This was associated with an additional increase of 1.5% going to R%D contracts, an increase of 1.5% going to non-R01 RPGs, and increase of 1.7% going to Intramural Research (part of which is due to an accounting change), and a 1.5% increase in Research Management and Support.
The activity codes that make up the increase in non-R01 equivalent RPGs are shown below:
Over this period, the largest contributors to the increase are cooperative agreements (which have significant NIH staff involvement), primarily U01s but also U19s and the growth in R21s (driven by a large increase in the number of applications). The investment in Program Project grants (P01s) actually fell over this period. The addition of new mechanisms including NIH Director's Pioneer (DP1) and New Innovator (DP2) awards as well as R00 made a small contribution to the growth.
These data are aggregated across all of NIH. As the previous post showed, there are significant differences between ICs. Further analysis will be required to analyze these trends.