Bayesian Sample Size Calculation in Small n, Sequential Multiple Assignment Randomized Trials (snSMART).

A recent study design for clinical trials with small sample sizes is the small n, sequential, multiple assignment, randomized trial (snSMART). An snSMART design has been previously proposed to compare the efficacy of two dose levels versus placebo. In such a trial, participants are initially randomized to receive either low dose, high dose or placebo in stage 1.

The deubiquitinase USP5 prevents accumulation of protein aggregates in cardiomyocytes.

Protein homeostasis is crucial for maintaining cardiomyocyte (CM) function. Disruption of proteostasis results in accumulation of protein aggregates causing cardiac pathologies such as hypertrophy, dilated cardiomyopathy (DCM), and heart failure. Here, we identify ubiquitin-specific peptidase 5 (USP5) as a critical determinant of protein quality control (PQC) in CM.

Disparities in 180-day Infection Rates Following Coronary Artery Bypass Grafting and Aortic Valve Replacement.

Objective: To compare sex and racial differences in 180-day infection rates after coronary artery bypass grafting (CABG) and aortic valve replacement (AVR).

Methods: A Statewide Society of Thoracic Surgeons Adult Cardiac Surgery Database was linked to Medicare claims data to identify 8,887 beneficiaries undergoing CABG and AVR (surgical or transcatheter) between 2017 and 2021. The primary outcome was the incidence of 180-day infection.

Interhospital Variability in 180-day Infections Following Cardiac Surgery.

Objective: This study sought to: (1) evaluate hospital-level variation in infections following cardiac surgery and (2) develop and evaluate a 180-day infection quality metric.

Methods: This study evaluated Medicare claims that were merged with institutional Society of Thoracic Surgeons Adult Cardiac Surgery Database files among patients undergoing cardiac surgery across 33 Michigan centers. The primary outcome was an infection within 180 days of surgery.

Reporting quality of animal research in journals that published the ARRIVE 1.0 or ARRIVE 2.0 guidelines: a cross-sectional analysis of 943 studies.

Background: The adherence to the Animals in Research: Reporting In Vivo Experiments (ARRIVE) guidelines across the journals that initially published the guidelines and if adherence has improved since the guidelines update, remains unknown. We aimed to quantify the level of adherence and analyze factors that might influence reporting quality among these journals.

Methods: This cross-sectional study retrospectively analyzed interventional animal experiments published in journals that released ARRIVE 1.