Evaluating the impact of stratification on the power and cross-arm balance of randomized phase 2 clinical trials.

Background/aims: Randomized clinical trials often use stratification to ensure balance between arms. Analysis of primary endpoints of these trials typically uses a "stratified analysis," in which analyses are performed separately in each subgroup defined by the stratification factors, and those separate analyses are weighted and combined. In the phase 3 setting, stratified analyses based on a small number of stratification factors can provide a small increase in power.

A comparative analysis of current С-peptide assays compared to a reference method: can we overcome inertia to standardization?

Objectives: C-peptide is an equimolar by-product of insulin biosynthesis. It is used clinically to assess insulin secretion and differentiate types of diabetes. However, the lack of standardization across assays limits its broader application.

Translation of dynamic contrast-enhanced imaging onto a magnetic resonance-guided linear accelerator in patients with head and neck cancer.

Background And Purpose: Magnetic resonance imaging - linear accelerator (MRI-linac) systems permit imaging of tumours to guide treatment. Dynamic contrast enhanced (DCE)-MRI allows investigation of tumour perfusion. We assessed the feasibility of performing DCE-MRI on a 1.

Dietary Patterns and Fibre Intake Are Associated with Disease Activity in Australian Adults with Inflammatory Bowel Disease: An Exploratory Dietary Pattern Analysis.

Background: Few studies have explored the relationship between habitual dietary patterns and disease activity in people with Inflammatory Bowel Disease (IBD). This cross-sectional study explored the association between dietary patterns and clinical and objective markers of inflammation in adults from the Australian IBD Microbiome Study.

Methods: Dietary patterns were derived using principal component analysis (PCA) of baseline food frequency questionnaire data.

Retail availability of oral nicotine pouches in 3 US cities: A geographic analysis.

Introduction: Sales of oral nicotine pouches (ONPs), including brands such as Zyn, on!, Velo, and Rogue, have risen precipitously in the US. One potential driver of ONP use may be exposure to the products and their marketing in local tobacco retailers. This study examines the prevalence and correlates of ONP availability in a large, representative sample of tobacco retailers in three major US cities.