Sameep Shah
Project Personnel, University of Chicago
2 active projects
Duplicate of Cancer
Scientific Questions Being Studied
We intend to explore the difference in the prevalence of cancer between the AoU population. In particular, we will be looking at the difference between the entire population, the subset with medical records, and the subset with self-reported data.
Project Purpose(s)
- Population Health
Scientific Approaches
We intend to select a list of SNOMED codes corresponding to primary cancers to get the subset with cancer in the medical record
We intend to select the survey question asking about self-reported cancer to get the subset with self-reported cancer
Anticipated Findings
We expect the difference of cancer to vary between self-report and medical record, which could have implications for how cancer is measured on a population-level.
Demographic Categories of Interest
This study will not center on underrepresented populations.
Research Team
Owner:
- Sameep Shah - Project Personnel, University of Chicago
- Francis Ratsimbazafy - Other, All of Us Program Operational Use
- Ashley Able - Other, Vanderbilt University Medical Center
Collaborators:
- Jun Qian - Other, All of Us Program Operational Use
Systemic Disease and Glaucoma (Cloned)
Scientific Questions Being Studied
We have previously published a predictive model of glaucoma progression using electronic health record (EHR) data pertaining to systemic attributes from a single institution. We aim to use the All of Us dataset to 1) serve as external validation for this single-center model and 2) to train new models focused on predicting glaucoma progression using systemic predictors. This is important to understand whether the original findings are generalizable and provide additional knowledge about the utility of systemic predictors on a national-level dataset.
Project Purpose(s)
- Disease Focused Research (Primary open angle glaucoma)
- Other Purpose (This work is the result of an All of Us Research Program Demonstration Project. Demonstration Projects are efforts by the All of Us Research Program designed to meet the goal of ensuring the quality and utility of the Research Hub as a resource for accelerating precision medicine. This work has been approved, reviewed, and overseen by the All of Us Research Program Science Committee and Data and Research Center to ensure compliance with program policy. )
Scientific Approaches
We plan to primarily work with EHR data contained in All of Us for a cohort of adult participants diagnosed with primary open-angle glaucoma. We will extract data on systemic conditions and medications for this cohort, as well as physical measurements and vital signs. We will clean the data such that the format is consistent with the data from our previously published model. Then, we will use this data as an external validation of a logistic regression model derived from our prior study that was based at a single academic center. Next, we will use All of Us data to train a new set of models, using techniques such as logistic regression, random forests, and artificial neural networks. We will optimize these models using feature selection methods and class balancing procedures. By evaluating performance metrics such as area under the curve (AUC), precision, recall, and accuracy, we will assess whether we can achieve superior predictive performance when training models using All of Us.
Anticipated Findings
We anticipate that the All of Us data will validate the findings from the model, which demonstrated that blood pressure-related metrics and certain medication classes had predictive value for glaucoma progression. In addition, we anticipate that the models trained with All of Us data will outperform the model trained with single institution data due to larger sample size and greater diversity. These findings will support further investigation in understanding the relationship between systemic conditions like blood pressure with glaucoma progression.
Demographic Categories of Interest
This study will not center on underrepresented populations.
Research Team
Owner:
- Tsung-Ting Kuo - Early Career Tenure-track Researcher, University of California, San Diego
- Sally Baxter - Research Fellow, University of California, San Diego
- Roxana Loperena Cortes - Other, All of Us Program Operational Use
- Francis Ratsimbazafy - Other, All of Us Program Operational Use
- Paulina Paul - Project Personnel, University of California, San Diego
- Melissa Patrick - Project Personnel, All of Us Program Operational Use
- Lucila Ohno-Machado
- Luca Bonomi - Research Fellow, University of California, San Diego
- Kelsey Mayo - Other, All of Us Program Operational Use
- Jihoon Kim - Project Personnel, University of California, San Diego
- Bharanidharan Radha Saseendrakumar - Project Personnel, University of California, San Diego
- Ashley Able - Other, Vanderbilt University Medical Center
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