A. John Bailer

A. John Bailer

Miami University

H-index: 42

North America-United States

About A. John Bailer

A. John Bailer, With an exceptional h-index of 42 and a recent h-index of 18 (since 2020), a distinguished researcher at Miami University, specializes in the field of statistics, biostatistics.

His recent articles reflect a diverse array of research interests and contributions to the field:

Visualizing the NIOSH Pocket Guide: Open-source web application for accessing and exploring the NIOSH Pocket Guide to Chemical Hazards

Winner, Winner, Chicken Dinner… Well, Maybe a Podcast Appearance and Some Swag: Using Contests to Engage Learner Communities

Impact of Organism Allocations on Potency Estimates from Ceriodaphnia dubia Reproduction Tests

ToxicR: A computational platform in R for computational toxicology and dose–response analyses

Comparing Methods for Determining Power Priors Based on Different Congruence Measures

I Can See Clearly Now, the Data’s Shown: Data Visualization Insights from Podcast Contest

Statistics behind the headlines

Incorporating historical data when determining sample size requirements for aquatic toxicity experiments

A. John Bailer Information

University

Miami University

Position

___

Citations(all)

6882

Citations(since 2020)

1606

Cited By

5795

hIndex(all)

42

hIndex(since 2020)

18

i10Index(all)

111

i10Index(since 2020)

35

Email

University Profile Page

Miami University

A. John Bailer Skills & Research Interests

statistics

biostatistics

Top articles of A. John Bailer

Visualizing the NIOSH Pocket Guide: Open-source web application for accessing and exploring the NIOSH Pocket Guide to Chemical Hazards

Authors

LeeAnn Lucas,Christine Whittaker,A John Bailer

Journal

Journal of occupational and environmental hygiene

Published Date

2024/1/2

The NIOSH Pocket Guide to Chemical Hazards is a trusted resource that displays key information for a collection of chemicals commonly encountered in the workplace. Entries contain chemical structures—occupational exposure limit information ranging from limits based on full-shift time-weighted averages to acute limits such as short-term exposure limits and immediately dangerous to life or health values, as well as a variety of other data such as chemical-physical properties and symptoms of exposure. The NIOSH Pocket Guide (NPG) is available as a printed, hardcopy book, a PDF version, an electronic database, and a downloadable application for mobile phones. All formats of the NIOSH Pocket Guide allow users to access the data for each chemical separately, however, the guide does not support data analytics or visualization across chemicals. This project reformatted existing data in the NPG to make it …

Winner, Winner, Chicken Dinner… Well, Maybe a Podcast Appearance and Some Swag: Using Contests to Engage Learner Communities

Authors

A John Bailer,Rosemary Pennington

Journal

CHANCE

Published Date

2023/7/3

The authors describe the popular podcast for statisticians and data scientists – Stats + Stories, which resulted from an experiment conducted in a quantitative literacy class at Miami University. They decided to hold a contest over the summer (2023) to celebrate the 300th episode and 10th anniversary of the podcast. This contest and others are described in the article.

Impact of Organism Allocations on Potency Estimates from Ceriodaphnia dubia Reproduction Tests

Authors

Jing Zhang,A John Bailer

Journal

Environmental Toxicology and Chemistry

Published Date

2023/7

In aquatic toxicology experiments, organisms are randomly assigned to an exposure group that receives a particular concentration level of a toxicant (including a control group with no exposure), and their survival, growth, or reproduction outcomes are recorded. Standard experiments use equal numbers of organisms in each exposure group. In the present study, we explored the potential benefits of modifying the current design of aquatic toxicology experiments when it is of interest to estimate the concentration associated with a specific level of decrease from control reproduction responses. A function of the parameter estimates from fitting a generalized linear regression model used to describe the relationship between individual responses and the toxicant concentration provides an estimate of the potency of the toxicant. After comparing different allocations of organisms to concentration groups, we observed that a …

ToxicR: A computational platform in R for computational toxicology and dose–response analyses

Authors

Matthew W Wheeler,Sooyeong Lim,John S House,Keith R Shockley,A John Bailer,Jennifer Fostel,Longlong Yang,Dawan Talley,Ashwin Raghuraman,Jeffery S Gift,J Allen Davis,Scott S Auerbach,Alison A Motsinger-Reif

Journal

Computational Toxicology

Published Date

2023/2/1

The need to analyze the complex relationships observed in high-throughput toxicogenomic and other omic platforms has resulted in an explosion of methodological advances in computational toxicology. However, advancements in the literature often outpace the development of software researchers can implement in their pipelines, and existing software is frequently based on pre-specified workflows built from well-vetted assumptions that may not be optimal for novel research questions. Accordingly, there is a need for a stable platform and open-source codebase attached to a programming language that allows users to program new algorithms. To fill this gap, the Biostatistics and Computational Biology Branch of the National Institute of Environmental Health Sciences, in cooperation with the National Toxicology Program (NTP) and US Environmental Protection Agency (EPA), developed ToxicR, an open-source R …

Comparing Methods for Determining Power Priors Based on Different Congruence Measures

Authors

Jing Zhang,Ainsley Helling,A John Bailer

Journal

Journal of Agricultural, Biological and Environmental Statistics

Published Date

2023/11/2

Experiments are routinely conducted to evaluate the toxicity of water effluents or chemicals. In a Ceriodaphnia dubia reproduction test, organisms are exposed to varying concentration levels of the toxicant or other adverse treatment and the number of young produced after a given experiment period are recorded. To analyze the test outcomes, mean reproduction is modeled as a function of the concentration, and the estimated concentrations associated with specified levels of adverse effect often are used in risk management. While aquatic toxicity analyses often focus on outcomes from the current test, laboratories commonly have a history of conducting such tests using the same species, following a similar experimental protocol. So it seems reasonable to assume that the same underlying biological process generates the historical and current tests. In the present study, we propose using a calibrated power prior …

I Can See Clearly Now, the Data’s Shown: Data Visualization Insights from Podcast Contest

Authors

A John Bailer,Rosemary Pennington

Journal

CHANCE

Published Date

2023/10/2

This update to a previous Chance article describes the data set used in a recent Stats + Stories data visualization contest, explain how the data was made available for classroom use, reports on the five finalists for the data visualization contest, and reveals the winner. Variables included names of guests and their locations, panelists on the Stats + Stories side, episode format (long, short), episode description (paragraph of text) and the URL for the episode. The five finalists in the data visualization contest make good use of this information.

Statistics behind the headlines

Authors

A John Bailer,Rosemary Pennington

Published Date

2022/9/28

How do you learn about what’s going on in the world? Did a news headline grab your attention? Did a news story report on recent research? What do you need to know to be a critical consumer of the news you read? If you are looking to start developing your data self-defense and critical news consumption skills, this book is for you! It reflects a long-term collaboration between a statistician and a journalist to shed light on the statistics behind the stories and the stories behind the statistics. The only prerequisite for enjoying this book is an interest in developing the skills and insights for better understanding news stories that incorporate quantitative information. Chapters in Statistics Behind the Headlines kick off with a news story headline and a summary of the story itself. The meat of each chapter consists of an exploration of the statistical and journalism concepts needed to understand the data analyzed and reported …

Incorporating historical data when determining sample size requirements for aquatic toxicity experiments

Authors

Jing Zhang,Yunzhi Kong,A John Bailer,Zheng Zhu,Byran Smucker

Journal

Journal of Agricultural, Biological and Environmental Statistics

Published Date

2022/9

In aquatic toxicity tests, responses of interest from organisms exposed to varying concentration levels of the toxicant or other adverse treatment are recorded. These responses are modeled as functions of the concentration and the concentration associated with specified levels of estimated adverse effect are used in risk management. While aquatic toxicity analyses often focus on outcomes from a single experiment, laboratories commonly have a history of conducting such experiments using the same species, following a similar experimental protocol. So it is often reasonable to believe that the same underlying biological process generates the historical and current experiments. This connection may facilitate the design of more efficient experiments. In the present study, we propose a simulation-based Bayesian sample size determination approach using historical control outcomes as prior input and illustrate it using a C. dubia reproduction …

Review of Statistical Models in Toxicology by Mehdi Razzaghi

Authors

A John Bailer

Published Date

2021/12

17 February 2021 Statistical Models in Toxicologyis written by an author with extensive experience working in toxicology data analysis and in collaborating with colleagues at the National Center for Toxicological Research. This book describes statistical models for analyzing mammalian toxicology studies, particularly such studies that might inform human risk assessment. Issues in ecological risk assessment (ERA) such as sentinel species, species sensitivity distributions or considerations when evaluating impact at different trophic levels are not considered. Ecotoxicology, aquatic toxicology or wildlife toxicology studies would be part of an ERA but are not discussed in this book.Level: The author notes that prerequisite knowledge of calculus, matrix algebra, statistical distributions and statistical inference is assumed and that knowledge of linear models would be beneficial. A reader should be familiar with likelihood …

Metabolic and cardiovascular responses to a simulated commute on an e-bike

Authors

Helaine M Alessio,Timothy Reiman,Brett Kemper,Winston von Carlowitz,A John Bailer,Kyle L Timmerman

Journal

Translational journal of the American college of sports medicine

Published Date

2021/4/1

Electric bicycles (e-bikes) with battery-powered assist may overcome barriers to active transportation (ie, time and perceived effort), benefit cardiometabolic health, and be an environmentally friendly transportation option. This study aimed to compare cardiometabolic responses and ratings of perceived exertion (RPE) between a regular bike and an e-bike at two different assist levels during a 3-mile ride. During the same day and in randomized order, male (n= 16) and female (n= 14) participants (19–61 yr) completed three outdoor 3-mile bike rides, simulating a typical commute, at their own pace on a regular bicycle and on an e-bike at two different assist levels. Heart rate (HR) and oxygen consumption (V̇O 2) were monitored continuously during each ride. RPE was reported at the end of each 3-mile ride. Linear mixed effects models were created to compare different bike conditions while accounting for the …

Statistical programming in SAS

Authors

A John Bailer

Published Date

2020/1/28

Statistical Programming in SAS Second Edition provides a foundation for programming to implement statistical solutions using SAS, a system that has been used to solve data analytic problems for more than 40 years. The author includes motivating examples to inspire readers to generate programming solutions. Upper-level undergraduates, beginning graduate students, and professionals involved in generating programming solutions for data-analytic problems will benefit from this book. The ideal background for a reader is some background in regression modeling and introductory experience with computer programming. The coverage of statistical programming in the second edition includes  Getting data into the SAS system, engineering new features, and formatting variables  Writing readable and well-documented code  Structuring, implementing, and debugging programs that are well documented  …

Discussion of “A review of data science in business and industry and a future view”

Authors

Alberto Ferrer

Published Date

2020/1

Data Science has emerged to cope with the so-called data tsunami. Modern industry and advanced technology is adopting the Industry 4.0 paradigm fostered by the Industrial Internet of Things connecting intelligent physical entities to each other and allowing complex equipment units to have embedded sensors and special modules (agents) providing connection to the monitoring center. Smartphones and Internet are contributing in a similar way in social networks, marketing, sales, and finance. Processes not only produce goods or provide services but also data, and for the first time in history we have data everywhere. This is leading to the so-called Big Data environment, characterized by the four Vs: volume, variety, velocity, and veracity. We live in a new era of digitalization where there is a belief that data contain useful information that has to be mined for helping the decision-making process.But datasets are so …

Modeling risks from water contaminants: The application of concentration-response models

Authors

A John Bailer,Christopher J Portier

Published Date

2020/8/26

Developing exposure standards in the United States has traditionally been divided into two major components: risk assessment and risk management. Risk management covers a broad range of topics, including developing regulatory policies and the overall evaluation of public health. Included in this process is the evaluation of the economic, social, and political consequences of certain regulatory options. Risk management has been discussed in other reports (eg, Reference 1) and is not discussed further in this chapter.Risk assessment can be divided into three components: the identification of agents that lead to adverse human and ecosystem responses, the assessment of the level of exposure in a population to these agents, and the evaluation of the relationship between exposure and response. The" responses" range from cancer onset or increases in genetic damage in humans occupationally exposed to a …

Web Application to Investigate Butler County Overdose Death Data

Authors

Alison C Tuiyott,Bri Clements,A John Bailer,Lisa K Mannix,Jennifer F Bailer

Journal

Ohio Journal of Public Health

Published Date

2020/6/1

Background: Drug overdose deaths, specifically opioid-related deaths, are a public health crisis in the United States with high incidence observed in many Midwestern states, including Ohio. Butler County, Ohio, has the third highest opioid-related death rate in the state. Information on overdose deaths, collected by the county coroner, can serve as a data source for analysis of this public health concern. Given this access, stakeholders can investigate trends in their community for their idiosyncratic interest.Methods: A web application was developed, using the R Shiny package, to visualize and explore the characteris-tics of all overdose deaths in Butler County between 2013 and 2018. Demographics of the decedents, drugs found in the decedents’ postmortem toxicology analyses, annual trends in overdose deaths, and the location of these cases can be examined.Results: The web application provides a graphical user interface that allows a user to request specific analyses and summaries.“Who is dying from opioid overdoses?,”“What drugs, including opioids, are found in people dying from drug overdoses?,” and “Has the number of opioid involved deaths increased in a specific community over time?” are examples of questions that can be explored using this application.Conclusion: This application empowers both the public and local policymakers to investigate the impact of overdose deaths on their communities. Understanding characteristics of the epidemic is an important first step to addressing this problem. The expansion of this application to include other counties in Ohio could be truly beneficial to communities that need it.

Statistics for environmental biology and toxicology

Authors

A John Bailer

Published Date

2020/4/3

Statistics for Environmental Biology and Toxicology presents and illustrates statistical methods appropriate for the analysis of environmental data obtained in biological or toxicological experiments. Beginning with basic probability and statistical inferences, this text progresses through non-linear and generalized linear models, trend testing, time-to-event data and analysis of cross-classified tabular and categorical data. For the more complex analyses, extensive examples including SAS and S-PLUS programming code are provided to assist the reader when implementing the methods in practice.

See List of Professors in A. John Bailer University(Miami University)

A. John Bailer FAQs

What is A. John Bailer's h-index at Miami University?

The h-index of A. John Bailer has been 18 since 2020 and 42 in total.

What are A. John Bailer's top articles?

The articles with the titles of

Visualizing the NIOSH Pocket Guide: Open-source web application for accessing and exploring the NIOSH Pocket Guide to Chemical Hazards

Winner, Winner, Chicken Dinner… Well, Maybe a Podcast Appearance and Some Swag: Using Contests to Engage Learner Communities

Impact of Organism Allocations on Potency Estimates from Ceriodaphnia dubia Reproduction Tests

ToxicR: A computational platform in R for computational toxicology and dose–response analyses

Comparing Methods for Determining Power Priors Based on Different Congruence Measures

I Can See Clearly Now, the Data’s Shown: Data Visualization Insights from Podcast Contest

Statistics behind the headlines

Incorporating historical data when determining sample size requirements for aquatic toxicity experiments

...

are the top articles of A. John Bailer at Miami University.

What are A. John Bailer's research interests?

The research interests of A. John Bailer are: statistics, biostatistics

What is A. John Bailer's total number of citations?

A. John Bailer has 6,882 citations in total.

What are the co-authors of A. John Bailer?

The co-authors of A. John Bailer are Dana Loomis, James Oris, Takashi Yamashita, Jane Straker.

    Co-Authors

    H-index: 77
    Dana Loomis

    Dana Loomis

    University of Nevada, Reno

    H-index: 42
    James Oris

    James Oris

    Miami University

    H-index: 23
    Takashi Yamashita

    Takashi Yamashita

    University of Maryland, Baltimore County

    H-index: 19
    Jane Straker

    Jane Straker

    Miami University

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