Determination of survival time among persons with screen-detected cancer is subject to lead time and length biases. The authors propose a simple correction for lead time, assuming an exponential distribution of the preclinical screen-detectable period. Assuming two latent categories of tumors, one of which is more prone to screen detection and correspondingly less prone to death from the cancer in question, the authors have developed a strategy of sensitivity analysis for various magnitudes of length bias. Here they demonstrate these methods using a series of 25,962 breast cancer cases (1988-2004) from the West Midlands, United Kingdom.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1093/aje/kwn120 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
The Impact of Surgeon Experience-Consultant Versus Supervised Trainees After Elective Infrarenal EVAR: Short-term to Mid-term Outcomes.
J Endovasc Ther
January 2025
Angiology and Vascular Surgery Department, Hospital de Santa Marta, Unidade Local de Saúde São José, Lisbon, Portugal.
Introduction: Vascular trainees are required to have a comprehensive training program, encompassing the completion of clinical, surgical, and research tasks. To fulfill their surgical abilities and performance, sufficient supervised operating time is mandatory. After open vascular procedures, it has been observed that trainee involvement does not lead to detrimental outcomes.
View Article and Find Full Text PDFDiffusive evaporation dynamics in polymer solutions is ubiquitous.
Soft Matter
January 2025
SUPA and School of Physics and Astronomy, The University of Edinburgh, Peter Guthrie Tait Road, Edinburgh EH9 3FD, UK.
Recent theory and experiments have shown how the buildup of a high-concentration polymer layer at a one-dimensional solvent-air interface can lead to an evaporation rate that scales with time as and that is insensitive to the ambient humidity. Using phase field modelling we show that this scaling law constitutes a naturally emerging robust regime, diffusion-limited evaporation (DLE). This regime dominates the dynamical state diagram of the system, which also contains regions of constant and arrested evaporation, confirming and extending understanding of recent experimental observations and theoretical predictions.
View Article and Find Full Text PDFPreparation and pharmacokinetic evaluation of a sertraline-methylpropyphenazone prodrug: a comparative metabolic study on the plasma and brain tissues of rats using LC-MS/MS analysis.
RSC Adv
January 2025
Department of Pharmaceutical Chemistry, Faculty of Pharmacy, King Abdulaziz University P.O. Box 80260 Jeddah 21589 Saudi Arabia +966 553399718.
A mutual prodrug of sertraline-methylpropyphenazone (SER-MP) was prepared and characterized using a spectral method. The yield of the prepared SER-MP was 90%, and its purity reached 98.8%.
View Article and Find Full Text PDFGame changing electoral reforms and party system change? An analysis of the 2020 national assembly election in South Korea.
Heliyon
January 2025
School of International Studies, Hanyang University, 222Wangsimni-ro, Seongdong-gu, Seoul, 04763, Republic of Korea.
The article analyses the 2020 National Assembly election in South Korea. It was the first legislative election held after President Park Geun-hye had been successfully impeached, and removed from office, in March 2017. The 2020 election was also the first election after important changes to the electoral law were made in 2019.
View Article and Find Full Text PDFUnlabelled: Transparent and accurate reporting in early phase dose-finding (EPDF) clinical trials is crucial for informing subsequent larger trials. The SPIRIT statement, designed for trial protocol content, does not adequately cover the distinctive features of EPDF trials. Recent findings indicate that the protocol contents in past EPDF trials frequently lacked completeness and clarity.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!