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De-biasing the bias: methods for improving disparity assessments with noisy group measurements.
Biometrics
October 2024
RAND Corporation, Pittsburgh, PA 15213, United States.
Health care decisions are increasingly informed by clinical decision support algorithms, but these algorithms may perpetuate or increase racial and ethnic disparities in access to and quality of health care. Further complicating the problem, clinical data often have missing or poor quality racial and ethnic information, which can lead to misleading assessments of algorithmic bias. We present novel statistical methods that allow for the use of probabilities of racial/ethnic group membership in assessments of algorithm performance and quantify the statistical bias that results from error in these imputed group probabilities.
View Article and Find Full Text PDFIndividuals with Heterogenous Trabecular Bone Texture by Clinical MRI have Lower Bone Strength and Stiffness by QCT Based Finite Element Analysis.
J Bone Miner Res
December 2024
Division of Endocrinology/Metabolic Bone Disease Service, Hospital for Special Surgery, New York, NY.
Opportunistic screening is essential to improve the identification of individuals with osteoporosis. Our group has utilized image texture features to assess bone quality using clinical MRIs. We have previously demonstrated that greater heterogeneity of MRI texture related to history of fragility fractures, lower bone density, and worse microarchitecture.
View Article and Find Full Text PDFExtraction and biological activities of polysaccharides and saponins from : a review.
Nat Prod Res
December 2024
School of Food Sciences and Engineering, Changchun University, Changchun, China.
(), a perennial woody plant of the Araliaceae family, is extensive in Northeast China. Esteemed for both its medicinal and edible qualities in the Changbai Mountain region, its primary components include polysaccharides, saponins, and flavonoids. displays numerous pharmacological effects, such as cardiovascular protection, anti-tumour, anti-fatigue, and hypoglycaemic properties.
View Article and Find Full Text PDFA Bayesian Hybrid Design With Borrowing From Historical Study.
Pharm Stat
December 2024
Biostatistics, Daiichi Sankyo Inc, Basking Ridge, USA.
In early phase drug development of combination therapy, the primary objective is to preliminarily assess whether there is additive activity from a novel agent when combined with an established monotherapy. Due to potential feasibility issues for conducting a large randomized study, uncontrolled single-arm trials have been the mainstream approach in cancer clinical trials. However, such trials often present significant challenges in deciding whether to proceed to the next phase of development due to the lack of randomization in traditional two-arm trials.
View Article and Find Full Text PDFA descriptive examination of rurality in the Environmental influences on Child Health Outcomes Cohort: Implications, illustrations, and future directions.
J Rural Health
January 2025
Avera Research Institute, Avera McKennan Hospital, Sioux Falls, South Dakota, USA.
Purpose: The Environmental influences on Child Health Outcomes (ECHO) Cohort has enrolled over 60,000 children to examine how early environmental factors (broadly defined) are associated with key child health outcomes. The ECHO Cohort may be well-positioned to contribute to our understanding of rural environments and contexts, which has implications for rural health disparities research. The present study examined the outcome of child obesity to not only illustrate the suitability of ECHO Cohort data for these purposes but also determine how various definitions of rural and urban populations impact the presentation of findings and their interpretation.
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