Time to event data occur commonly in orthopedics research and require special methods that are often called "survival analysis." These data are complex because both a follow-up time and an event indicator are needed to correctly describe the occurrence of the outcome of interest. Common pitfalls in analyzing time to event data include using methods designed for binary outcomes, failing to check proportional hazards, ignoring competing risks, and introducing immortal time bias by using future information. This article describes the concepts involved in time to event analyses as well as how to avoid common statistical pitfalls. Please visit the followinghttps://youtu.be/QNETrx8B6IUandhttps://youtu.be/8SBoTr9Jy1Qfor videos that explain the highlights of the paper in practical terms.
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http://dx.doi.org/10.1016/j.arth.2021.04.014 | DOI Listing |
Eur J Cardiothorac Surg
January 2025
Department of Cardiothoracic Surgery, Maastricht University Medical Centre (MUMC+), Netherlands.
Objectives: Previous analyses of the volume-outcome relationship have focused on short-term outcomes such as early mortality. The current study aims to update a novel statistical methodology, facilitating the evaluation of the relation between procedural volume and time-to-event outcomes such as long-term survival, using surgery for acute type A aortic dissection as an illustrative example.
Methods: This study employed an existing dataset of type A dissection outcomes, retrieved from literature.
Arch Orthop Trauma Surg
January 2025
Centre Hospitalier Universitaire de Nîmes, Nîmes, France.
Purpose: The adoption of robotic-assisted total hip arthroplasty (THA) is increasingly widespread, yet its influence on outcomes in outpatient surgery remains uncertain. This study aimed to evaluate whether robotic assistance reduces the rate of 90-day postoperative events in patients undergoing outpatient THA, compared to those in inpatient procedures.
Methods: This historical-prospective cohort study analyzed 706 primary THA cases performed between January 2017 and January 2023 by three senior surgeons.
Int J Biometeorol
January 2025
Faculty of Kinesiology and Physical Education, University of Toronto, Toronto, ON, Canada.
Climate change is making extreme heat events more frequent and intense. This negatively impacts many aspects of society, including organised sport. As the world's most watched sporting event, the FIFA World Cup commands particular attention around the threat of extreme heat.
View Article and Find Full Text PDFJ Gerontol B Psychol Sci Soc Sci
January 2025
Department of Geriatric Medicine, Radboud university medical center, Nijmegen, The Netherlands.
Objective: Maintaining a strong social network in later life can be challenging due to limited resources, life events, and changes in health. Social internet use provides an accessible way for communication that is less susceptible to age-related challenges. Although social internet use is increasingly used by older adults, we do not know how social internet use shapes older adults' offline networks.
View Article and Find Full Text PDFAlcohol Clin Exp Res (Hoboken)
January 2025
Addiction Neuroscience, Department of Psychology and Indiana Alcohol Research Center, Indiana University Indianapolis, Indianapolis, Indiana, USA.
Background: The loss of a job or relationship are a couple of examples of unexpected reward loss. Life events, such as these can induce negative emotional reactions (e.g.
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