By Maxwell Awumah, GNA
Ho, Nov 13, GNA- Ho, Nov. 10, GNA – The University of Health and Allied Sciences (UHAS) is celebrating 12 of its academics and researchers who have been recognised among the world’s top two per cent of scientists by Elsevier in collaboration with Stanford University.
The recognition highlights their outstanding contributions to research, knowledge development, innovation and the global scientific community, according to a statement shared with the Ghana News Agency.
Professor Lydia Aziato, Vice-Chancellor of UHAS, congratulated the recognised scholars and praised their commitment to research and excellence.
“Your dedication to advancing knowledge and improving lives continues to inspire all of us.
Your pursuit of research excellence and your contributions have placed UHAS on the global map, strengthening the University’s commitment to research that drives progress and transforms communities. The Great Giant is rising, and our impact is reaching the world!” she said.
The ranking is the 2026 single-year list, based on data from Scopus. It measures the citation impact of researchers during a particular year rather than their total research impact throughout their careers.
The c-score, or composite citation score, is a measure used in the Stanford–Elsevier World’s Top 2% Scientists database. It combines several research indicators instead of looking at the total number of citations alone.
These indicators include total citations, both with and without self-citations, the h-index and related measures, adjusted citation measures that consider the number of co-authors, and citations to papers where the researcher was the sole, first or last author.
The aim is to assess research impact from different angles rather than simply rewarding researchers with the highest number of citations.
The Ghana 2026 ranking page lists the following UHAS researchers and their scores:
UHAS researcher Global rank shown c-score
Emmanuel Amponsah Manu 637,459 2.08
Fred Newton Binka 516,000 2.16
John O. Gyapong 463,042 2.20
Robert Kokou Dowou 457,677 2.21
Margaret Gyapong 428,752 2.23
Seth Owusu-Agyei 365,598 2.29
Lydia Aziato 361,605 2.29
V. N. Orish 293,469 2.37
Martin Amogre Ayanore 162,174 2.58
Elvis Enowbeyang Tarkang 159,284 2.59
Mustapha Immurana 74,611 2.84
Hubert Amu 54,414 2.94
Richard Gyan Aboagye 36,347 3.07
Source: the supplied Ghana 2026 single-year ranking page.
For example, the release explained that Richard Gyan Aboagye’s c-score of 3.07 represents the combined value of six standardised citation indicators. It does not mean that he has a 3.07 per cent citation impact or has received 3.07 times more citations than another researcher.
Similarly, a researcher with a score of 2.94 has a lower composite score than one with 3.07. However, the difference between the scores does not necessarily represent the actual difference in their research impact.
The global rank shows a researcher’s position among scientists worldwide. It does not represent their position among researchers in Ghana or within UHAS. For example, a global rank of 36,347 means the researcher occupies that position in the database’s global ranking. A lower ranking number indicates a higher position.
However, a higher c-score does not necessarily mean better research. The score measures citation impact but does not cover every aspect of research quality, such as originality, social impact, relevance or the strength of research methods.
“An especially noteworthy aspect of this achievement is that some of the recognised researchers are relatively young, demonstrating that research excellence and global impact are not necessarily products of long years in academia. Their achievements reflect the growing research capacity at UHAS and the ability of emerging scholars to make significant contributions to scientific knowledge and development. This is particularly encouraging for the University, as it highlights the potential of some of its younger academic generation to shape research and innovation in Ghana and beyond,” the release stated.
There are also limitations to consider. Citation practices differ across research fields, while established researchers may have more citations because they have been working longer. The importance given to first and last authorship may also vary across disciplines.
In addition, research publications and citations not included in Scopus are not counted. Errors in merging or separating researchers’ Scopus profiles can also affect their scores.
The 2026 single-year ranking needs to be understood correctly. It measures citations received during 2025, not the number of publications produced in that year. The ranking uses a Scopus data snapshot dated August 1, 2026.
The Ghana 2026 single-year ranking page identifies 13 UHAS-affiliated researchers, with c-scores ranging from 2.08 to 3.07.
Their recognition reflects the University’s contribution to research and scientific development at the global level. It also highlights the importance of continued investment in research, innovation and knowledge creation to address health and development challenges in Ghana and beyond.
GNA
Edited by: Kenneth Odeng Adade
Reported by: Maxwell Awumah
Email: [email protected]