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A new report documents a sharp decline in prison populations in the U.S. during the pandemic and the number of COVID-19 related infections and deaths.

A study by Abt and its partners showed three COVID-19 vaccine doses are more effective than two but are less effective against Omicron than against Delta.

Abt worked with HUD and HHS to deliver the first study to address homeless encampments and possible best practices for addressing them.

Abt’s evaluation of Medicare’s AIM found $381.5 million in savings, and raised questions about how those savings—and risks—are shared.

Abt moved fast to adapt to changing CDC needs, including collecting data on vaccine effectiveness that showed the vaccines are highly effective.

Abt led the evaluation of  CMS’s Oncology Care Model, which was associated with modest but statistically significant episode payment reductions.

Abt Global reports find women fare worse than men and low-wage workers fare worse than non-low-wage workers when employees take family and medical leave.

An Abt study finds Medicare’s BPCI initiative was able to reduce Medicare payments without sacrificing outcomes for vulnerable populations.

A new study shows large gender and racial disparities in wage growth widen over 10 years for workers who start out in similar jobs in mid-level occupations.

Abt Global today announced that the national Year Up program generated some of the largest sustained earnings gains ever reported for a job training program for low-income young adults.