R01 Size Distribution for PIs with a Single R01/R37 Grant in FY2014

Jan 28 2015 Published by under Uncategorized

A comment to my previous post asked about the size distribution for R01s for investigators with a single R01 grant. This distribution is shown below:

Single R01 histogram figure

The median is $371K (total costs) with an interquartile range of ($464K - $318K) = $146K. This distribution is very similar to that for all R01s for FY2013 presented in an earlier post.  Approximately 1/3 of the grants fall outside of a Gaussian distribution centered around the mode of the distribution. These represent grants that are outside of the range determined by the modular cap.

UPDATE:

Here is a plot of the cumulative fraction of total R01 funding going to PIs with single R01 grants as a function of R01 size from smallest to largest:

Single R01 Cum graph

 

Grants up to the modular cap limit of approximately $375K total costs account for approximately 55% of the total R01 expenditure for PIs with single R01 grants.

2 responses so far

  • lurker says:

    Thanks DH, but I was hoping you could save me the trouble of manually integrating under the curve the dollar amount fraction of this distribution those with a single R01 greater than the $464K upper quartile? I'm wondering from this pool of PIs with just 1 R01, this being across all IC's, does this distribution mirror an analysis by Lorsch where 20% of all NIGMS grantees are receiving 50% of the extramural funding? I was hoping for a pie chart...

  • Pinko Punko says:

    This distribution represents a snapshot of the past and a decaying future. You see some very large grants, likely 15-40 years in age, and you see some tiny grants that represent investigators on modular budgets that are cut down to 188K/year. When study sections really push significance and impact, how does the productivity of a 188K/year R01 compare to a 375K/year, let alone some much larger grants. It seems a recipe for one and done.

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