Calculating excess risk with age-dependent adjustment factors and cumulative doses: ethylene oxide case study.

Regul Toxicol Pharmacol

Sielken & Associates Consulting Inc., 3833 South Texas Avenue, Suite 230, Bryan TX 77802, USA.

Published: October 2009

U.S. EPA's Supplemental Guidance in 2005 documented their procedure for incorporating age-dependent adjustment factors (ADAFs) into lifetime excess risk calculations. EPA's first attempt to implement an ADAF when the dose-response model had a cumulative dose metric was for ethylene oxide and that attempt (US EPA, 2006) failed to successfully follow EPA's own guidelines. The failure suggested that the incorporation of ADAFs would increase the lifetime excess risk for ethylene oxide by approximately 66%. However, if the procedure in the guidelines were followed correctly, then the increase would have only been 0.008% or approximately 8,000 fold less. Because cumulative exposure is a common dose metric in dose-response models of epidemiological data, a correct implementation of the guidelines is of widespread importance.

Download full-text PDF

Source
http://dx.doi.org/10.1016/j.yrtph.2009.06.004DOI Listing

Publication Analysis

Top Keywords

excess risk
12
ethylene oxide
12
age-dependent adjustment
8
adjustment factors
8
lifetime excess
8
dose metric
8
calculating excess
4
risk age-dependent
4
factors cumulative
4
cumulative doses
4

Similar Publications

Motlagh, JG and Lipps, DB. The contribution of muscular fatigue and shoulder biomechanics to shoulder injury incidence during the bench press exercise: A narrative review. J Strength Cond Res 38(12): 2147-2163, 2024-Participation in competitive powerlifting has rapidly grown over the past two decades.

View Article and Find Full Text PDF

Placebo effect represents a serious confounder for the assessment of treatment effect to the extent that it has become increasingly difficult to develop antidepressant medications appropriate for outperforming placebo. Treatment effect in randomized, placebo-controlled trials, is usually estimated by the mean baseline adjusted difference of treatment response in active and placebo arms and is function of treatment-specific and non-specific effects. The non-specific treatment effect varies subject by subject conditional to the individual propensity to respond to placebo.

View Article and Find Full Text PDF

In modern society, many workers struggle with sleep deprivation due to their work schedules and excessive workloads. Accurate self-awareness and self-monitoring abilities are crucial for workers to adopt risk-coping strategies and protective behaviors when fatigued. The current study examined the relationship between chronotypes and self-monitoring performance during 24 h of sleep deprivation.

View Article and Find Full Text PDF

Tissue-Engineered Therapeutics for Lymphatic Regeneration: Solutions for Myocardial Infarction and Secondary Lymphedema.

Adv Healthc Mater

January 2025

Department of Biomedical Engineering, College of Engineering, Texas A&M University, 5045 Emerging Technologies Building 3120 TAMU, College Station, TX, 77843-3120, USA.

The lymphatic system, which regulates inflammation and fluid homeostasis, is damaged in various diseases including myocardial infarction (MI) and breast-cancer-related lymphedema (BCRL). Mounting evidence suggests that restoring tissue fluid drainage and clearing excess immune cells by regenerating damaged lymphatic vessels can aid in cardiac repair and lymphedema amelioration. Current treatments primarily address symptoms rather than underlying causes due to a lack of regenerative therapies, highlighting the importance of the lymphatic system as a promising novel therapeutic target.

View Article and Find Full Text PDF

Background: The primary prevention of atrial fibrillation (AF), which increases mortality through complications including stroke and heart failure, is important. Excessive salt intake and low potassium intake are risk factors for cardiovascular disease; however, their association with AF remains inconclusive. This study investigated the association between sodium- and potassium-related urinary markers and AF prevalence.

View Article and Find Full Text PDF

Want 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!