Productivity Rankings is a unique service offered only by “AD Scientific Index”. This is a ranking system derived from the i10 index in order to show the productivity of the scientist in publishing scientific articles of value. Productivity Rankings is an instrument that lists productive scientists in a given area, discipline, university, and country and can guide the development of meaningful incentives and academic policies. The world rankings, regional rankings, and university rankings of scientists in this table are developed based on the total i10 index. Click for "last 6 years' i10 index". Also see: Universities Rankings 2024 (Sort by : Total i10 Index) and Universities Rankings 2024 (Sort by : Last 6 Years i10 Index)
![Grant R Williams](https://cdn.adscientificindex.com/pictures/ca/1702450.jpg)
geriatric oncology
gastrointestinal oncology
geriatric assessment
sarcopenia
frailty
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
113
112
0.991
![Seth Landefeld](/user/assets/images/profile/no-profile-photo.png)
health care research
geriatrics
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
167
108
0.647
![Christine C Ferguson](https://cdn.adscientificindex.com/pictures/b3/5682956.jpg)
gerontology
disability
nutrition
dietary patterns
neurology
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
2
2
1.000
![Cheryl Lee](https://cdn.adscientificindex.com/pictures/fe/5200582.jpg)
geriatrics
dementia
caregivers
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
1
1
1.000
Grant R Williams
University of Alabama Birmingham
Birmingham, United States
![United States](/flags/us.png)
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
113
112
0.991
geriatric oncology
gastrointestinal oncology
geriatric assessment
sarcopenia
frailty
Seth Landefeld
University of Alabama Birmingham
Birmingham, United States
![United States](/flags/us.png)
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
167
108
0.647
health care research
geriatrics
Christine C Ferguson
University of Alabama Birmingham
Birmingham, United States
![United States](/flags/us.png)
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
2
2
1.000
gerontology
disability
nutrition
dietary patterns
neurology
Cheryl Lee
University of Alabama Birmingham
Birmingham, United States
![United States](/flags/us.png)
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
1
1
1.000
geriatrics
dementia
caregivers