Citation Rankings (Highly Cited Researchers) 2024 and list of influential and most cited researchers in Agriculture and Forestry, Art, Design and Architecture, Business and Management, Economics and Econometrics, Education, Engineering and Technology, History, Philosophy, Theology, Law, Medicine and Health Sciences, Natural Sciences and Social Sciences and their 256 sub-branches is a unique service offered only by “AD Scientific Index”. You can see the most cited and influential researchers in the country and region. See also for more specific citation analyses: "last 6 years citation index" Universities Rankings 2024 (Sort by: Total Citations) and Universities Rankings 2024 (Sort by : Last 6 Years Citations)
* Total Citation Counts Rankings
World Rank
1,386,464
Country Rank
19,486
Institution Rank : 745
![](https://cdn.adscientificindex.com/logos/10883.png)
![Nigeria](/flags/ng.png)
![Obiageli Chiezey Onwusaka](/pictures/96/4745162.jpg)
Public health
Medical Statistics
biostatistics
Clinical research
population and reproductive health
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
105
96
0.914
* Total Citation Counts Rankings
World Ranking
1,386,464
Country Ranking
19,486
Institution Ranking
745
Obiageli Chiezey Onwusaka
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
105
96
0.914
![](https://cdn.adscientificindex.com/logos/10883.png)
Public health
Medical Statistics
biostatistics
Clinical research
population and reproductive health