Publications by authors named "Todd Hayes-Birchler"
Background: Information on COVID-19 vaccination effects on mortality among patients hospitalized with COVID-19 could inform vaccination outreach efforts and increase understanding of patient risk.
Objective: Determine the associations of vaccination status with mortality in adult patients hospitalized with COVID-19.
Design: This retrospective cohort study assessed the characteristics and mortality rates of adult patients hospitalized with COVID-19 across 21 healthcare systems in the USA from January 1, 2021, to January 31, 2022.
Main Objective: There is limited information on how patient outcomes have changed during the COVID-19 pandemic. This study characterizes changes in mortality, intubation, and ICU admission rates during the first 20 months of the pandemic.
Study Design And Methods: University of Wisconsin researchers collected and harmonized electronic health record data from 1.
Article Synopsis
- The study analyzed data from over 104,000 COVID-19 patients to understand the impact of smoking status, nicotine replacement therapy (NRT), and vaccination on severe outcomes like death and ICU admission.
- Both current and never smokers had similar outcomes, but former smokers experienced higher risks of death and ICU admission.
- Current smokers receiving NRT had reduced mortality rates, and vaccination was more effective in lowering mortality for current and former smokers compared to never smokers.
Associations of Demographics, Dependence, and Biomarkers With Transitions in Tobacco Product Use in a Cohort of Cigarette Users and Dual Users of Cigarettes and E-cigarettes.
Nicotine Tob Res
February 2023
Introduction: It is uncertain whether e-cigarettes facilitate smoking cessation in the real world. We aimed to understand whether and how transitions among cigarette, e-cigarette, and dual use are associated with sociodemographics, dependence measures, and biomarkers.
Aims And Methods: We followed 380 adult daily cigarette users and dual users every 2 months for up to 2 years.
Relations of Current and Past Cancer with Severe Outcomes among 104,590 Hospitalized COVID-19 Patients: The COVID EHR Cohort at the University of Wisconsin.
Cancer Epidemiol Biomarkers Prev
January 2023
Background: There is mixed evidence about the relations of current versus past cancer with severe COVID-19 outcomes and how they vary by patient and cancer characteristics.
Methods: Electronic health record data of 104,590 adult hospitalized patients with COVID-19 were obtained from 21 United States health systems from February 2020 through September 2021. In-hospital mortality and ICU admission were predicted from current and past cancer diagnoses.
Introduction: Greater use of nicotine replacement therapy (NRT) is related to smoking cessation success, but the causal direction is unclear. This study characterized the relationship between NRT use and smoking lapse and relapse.
Methods: Participants (N = 416 smokers; 57% female, 85% White) were recruited from primary care for a smoking cessation factorial experiment and analyzed if abstaining ≥1 day in the first 2 weeks post-target quit day (TQD).
Objective: To examine the effects of five intervention components on smokers' adherence to combined nicotine patch and nicotine gum during a quit attempt and assess whether adherence is related to cessation.
Method: Smokers interested in quitting (N = 513; 59% female; 87% White) received nicotine patch plus nicotine gum and participated in a 2x2x2x2x2 randomized factorial experiment (i.e.