98%
921
2 minutes
20
High-throughput techniques for biological and (bio)medical sciences often result in read counts used in downstream analysis. Nowadays, complex experimental designs in combination with these high-throughput methods are regularly applied and lead to correlated count-data measured from matched samples or taken from the same subject under multiple treatment conditions. Additionally, as is common with biological data, the variance is often larger than the mean, leading to over dispersed count data. Hierarchical models have been proposed to analyze over dispersed, correlated data from paired, longitudinal, or clustered experiments. We consider a hierarchical negative-binomial model with normally distributed random effects to account for the within- and between-sample correlation. We focus on different software implementations to allow the use of the model in practice.
Download full-text PDF |
Source |
---|---|
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC12256765 | PMC |
http://dx.doi.org/10.1093/bioadv/vbaf126 | DOI Listing |
J Appl Stat
February 2025
Department of Mathematics and Statistics, Wright State University, Dayton, Ohio, USA.
Overdispersion is a common phenomenon in genetic data, such as gene expression count data. In genetic association studies, it is important to investigate the association between a gene expression and a set of genetic variants from a pathway. However, existing approaches for pathway analysis are primarily designed for continuous and binary outcomes and are not applicable to overdispersed count data.
View Article and Find Full Text PDFGen Hosp Psychiatry
August 2025
San Francisco Veterans Affairs Health Care System, 4150 Clement St, San Francisco, CA 94121, USA; University of California San Francisco, School of Medicine, 675 18th St, San Francisco, CA 94107, USA; Center for Data to Discovery and Delivery Innovation (3DI), 4150 Clement St, San Francisco, CA 9412
Recommended evidence-based psychotherapies (EBPs) for posttraumatic stress disorder (PTSD), including Cognitive Processing Therapy (CPT) and Prolonged Exposure Therapy (PE) are being delivered by video telehealth at high rates. Although clinical trials suggest that the treatment dose of PTSD EBPs is similar between in-person and video telehealth modalities, large-scale studies have not investigated whether this remains consistent in routine clinical practice. To fill this gap, we identified a national sample of veterans who initiated PTSD EBP from 4/2022-4/2023 (n = 23,812) in the Veterans Health Administration (VHA).
View Article and Find Full Text PDFFront Plant Sci
July 2025
Department of Biology, College of Science, King Abdullah University, Abha, Saudi Arabia.
The Fabaceae, a highly diverse and ecologically vital plant family, thrives across diverse biomes with remarkable nitrogen-fixation potential and functional adaptability. Despite its key role in global carbon and nitrogen cycles, the biogeographic patterns and environmental drivers of this important family remain understudied compared to other major angiosperm families. Here, we consolidate and curate a global dataset comprising 27,421 taxa of Fabaceae obtained from the World Checklist of Vascular Plants (WCVP) and the Global Inventory of Floras and Traits (GIFT) to investigate the geographical patterns of species and genera richness and their environmental determinants.
View Article and Find Full Text PDFJ Infect Public Health
July 2025
Department of Family Medicine and Public Health, College of Medicine and Health Sciences, Sultan Qaboos University, Muscat, Oman. Electronic address:
Background: Dengue fever, a major mosquito-borne disease (MBD), continues to impose a growing global burden fueled by urbanization, climate change, and increased human mobility. Accurate predictive models are crucial for early detection and outbreak mitigation. This study aimed to develop and compare hierarchical models, with and without lagged predictors, for forecasting dengue cases in Oman.
View Article and Find Full Text PDFTraffic Inj Prev
July 2025
School of Civil and Environmental Engineering, Nanyang Technological University, Singapore.
Objectives: The study seeks to explore rear-end collision risks in multi-vehicle car-following scenarios under adverse weather conditions by proposing an integrated framework.
Methods: The integrated framework is applied to a case study of three-vehicle car-following scenario in Norway without loss of generality. For identifying car-following groups with extreme collision risks, the collision risk of each group in the raw dataset is evaluated using an extended probabilistic driving risk field.