University of Massachusetts Medical School

Research Index

Percentiles among 1,305 ranked universities. Rank on quality alone: =81. On strength alone: =582. The Research Index scores research only; admissions, earnings and alumni outcomes are scored in the overall ranking where data exists.

The numbers behind it (2020–2023)

Papers in the top 10% of their field

14.6% (13.5%–15.7%)

Papers in the top 1% of their field

1.7% (1.4%–2.1%)

Top-10% papers (fractional count)

365

All papers (fractional count)

2,500

International co-authored

31.3%

Open access

73.1%

Papers from 2020–23 since retracted

2 (0.26 per 1,000)

Core publications, fractional counting, field-normalised citation shares. Brackets show Leiden’s stability interval. Collaboration and open-access shares use full counting and aren’t field-normalised. Retraction counts come from the Retraction Watch database and include publishers’ mass retractions as well as honest-error retractions; a retraction is not by itself evidence of misconduct, and the count is never scored.

By field

Position over time

The same method applied to each 4-year publication window. The number of ranked universities grows from period to period, so position is shown as a share of the field.