Learn the distinctions between simple and stratified random sampling. Understand how researchers use these methods to accurately represent data populations.

Arousal fluctuates continuously during wakefulness, yet how these moment-to-moment variations shape large-scale functional connectivity (FC) remains unclear. Here, we combined 7T fMRI with concurrent ...

Objectives To estimate the rate of hospitalisation, identify associated factors and assess out-of-pocket expenditure (OOPE) among adults with multimorbidity in Kerala, India. Design Community-based ...

The evidence is solid but not definitive, as the conclusions rely on the absence of changes in spatial breadth and would benefit from clearer statistical justification and a more cautious ...

Background Data-sharing mandates from funders and journals have increased in recent years, but little is known about how shared data are used. Existing research has focused on access frameworks, with ...

Chemical biomarkers are measurable molecular signatures (host immune markers, pathogen metabolites, volatile organic ...

Stephen Whitelam, a researcher whose work spans thermodynamic theory and machine learning, has described a framework for generating images from pure noise by using the physics of heat and motion ...

On August 6, 2025, New Age Metals announced an additional investment in a 4th critical metal. NAM currently owns ...

Objective Findings of previous studies on associations between dairy consumption and metabolic health status were inconsistent. This study aimed to assess the link between consumption of dairy foods ...

Douyin has become an important part of daily life in China since it combines entertainment, social interaction, and online ...

Researchers digging more than 13 feet into the parched floor of Chile’s Atacama Desert have found evidence of something long thought unlikely there: microbial communities persisting beneath one of the ...