Global update: USA
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Updated: May 16, 2026

The Participant-Reported Implementation Update and Score (PRIUS): A Novel Method for Capturing Implementation-Related Data Over Time
Published on: February 19, 2021
Kirstin Rw Matthews1, Maude L Rowland
1James A Baker III Institute for Public Policy, Rice University, 6100 Main Street, MS-40, Houston, TX 77005, USA. krwm@rice.edu
Abstract:
Despite the political nature of stem cell research, this area of science continues to flourish in the USA. In 2011, the NIH funded approximately US$1.2 billion in stem cell research - a steady increase from past years - with US$123 million devoted to human embryonic stem cells. According to the ISI Web of Science, more than 4000 US-authored stem cell publications were produced in 2011, accounting for approximately 38% of the world total. Approximately a quarter of these publications were collaborations with authors from other countries.
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