The National Institutes of Health has released a preliminary analysis of how it has spent the 2009 stimulus funding. One-third of the $4.35 billion went to fund previously reviewed applications that originally had missed the funding cutoff. An additional one-third went to extensions of existing grants, known as administrative supplements. The NIH also devoted more than one-fourth of its stimulus dollars to grant competitions, such as challenge grants. Of the 20,000 challenge grant applications, the NIH was able to fund 840, or about 4 percent.