Medicine and Health Sciences Commons^™

Numeracy And Financial Wellbeing During The Covid-19 Pandemic, Nora Wikoff

Numeracy

This paper examines the role of numeracy in smoothing financial difficulties during the COVID-19 pandemic. The results show that numeracy was associated with a 30% reduction in late or non-payment of bills and a 20% reduction in the odds of feeling financially squeezed. The effect of numeracy on financial wellbeing was remarkably consistent across levels of education, ethnicity, and gender, suggesting that improving numeracy levels in the population may be an effective strategy to increase financial capability across the board. However, while numerate individuals were less likely to experience financial difficulty, high numeracy did not predict narrower gaps between Whites …

Review Of Innumeracy In The Wild: Misunderstanding And Misusing Numbers By Ellen Peters, Gizem Karaali

Numeracy

Ellen Peters’s new book Innumeracy in the Wild: Misunderstanding and Misusing Numbers (Oxford University Press, 2020) is a whirlwind tour of psychological research on numeracy and its interactions with decision-making. The book is packed full of convincing arguments about the impact of numeracy and innumeracy on people's decisions and life outcomes, piles of supporting evidence and relevant references, and detailed expositions of multitudes of research results. Thus, it can serve the motivated reader well as a comprehensive literature review of psychologically oriented research on numeracy and decision-making.

Covid-19 And Quantitative Literacy: Focusing On Probability, Michael A. Lewis

Numeracy

The COVID-19 pandemic is arguably the worst crisis the world has faced, so far, in this new century. We haven’t seen a pandemic like this since the 1918 Flu at the beginning of the last century, and, as of this writing, there appears to be no end in sight. What those of us who’re focused on quantitative methods have noticed, in addition to the many people dying, becoming ill, and losing their livelihoods, is the importance of quantitative literacy to an understanding of what’s going on. That’s what this article is about. Specifically, it’s about how the COVID-19 pandemic is …

From R0 To The Herd: A Review Of The Rules Of Contagion, By Adam Kucharski, Nathan D. Grawe

Numeracy

Adam Kucharski. 2020. The Rules of Contagion: Why Things Spread--and Why They Stop; (London: Profile Books, Ltd.). Hardback ISBN 978-17-88-16019-3. E-book ISBN 978-17-82-83430-4.

Kucharski's well-timed Rules of Contagion provides an introduction to the mathematical and epidemiological principles behind contagious phenomenon. While the author's primary expertise stems from work on biological epidemics, the book points to examples from a wide range of fields including finance, psychology, computer science, and criminology. As such, selections of the book could be used by faculty in a wide range of classes to show how our recent experience with a viral epidemic might add to …

Factors In The Probability Of Covid-19 Transmission In University Classrooms, Charles Connor

Numeracy

University students and faculty members need an effective strategy to evaluate and reduce the probability that an individual will become infected with COVID-19 as a result of classroom interactions. Models are developed here that consider the probability an individual will become infected as a function of: prevalence of the disease in the university community, number of students in class, number of class meetings, and transmission rate in the classroom given the presence of an infected individual. Absolute probabilities that an individual will become infected in a classroom environment cannot be calculated because some of these factors have unknown values. Nevertheless, …

The Covid-19 Pandemic And The Power Of Numbers, Jessica Ancker

Numeracy

The COVID-19 pandemic has produced a deluge of news coverage of quantitative concepts. In this viewpoint, we provide examples of effective and poor quantitative communication by the professional news media as well as social media communicators. Effective examples include a number of online animations and engaging interactive simulations. Examples of poor quantitative communication include the widespread reporting of raw numbers rather than rates, failing to address uncertainty, not providing sufficient context for numbers, and not discussing the implications of false negative and false positive diagnostic test results. Educators can draw from this body of news to develop compelling quantitative literacy …

Effects Of Quantitative Literacy On Healthcare Decision-Making: An Aural Context, Robert G. Root, Sonia Bhala

Numeracy

We propose a relationship between sensory modality, numerical formatting, and performance on a survey simulating healthcare decision-making. We examine the current literature on aural health literacy, and specifically aural literacy coupled with health numeracy. We then create a survey instrument called the Bhala test for this purpose and demonstrate that it is moderately internally consistent and provides results that correlate with the NUMi assessment, a widely accepted measure of health numeracy. The quantitative information provided in the Bhala test has two treatments, percentage and natural frequency formats, in an effort to determine which format is easier for subjects to use …

The Impact Of Calculators On A Test Of Clinician Numeracy: A Randomized Controlled Trial, Anne A. Taylor, Douglas R. Corfield, Lucie M. Byrne-Davis

Numeracy

Clinician numeracy (CN), the ability to use and understand quantitative data in patient care, is an important skill for healthcare professionals. Nonetheless, it is recognized that many healthcare professionals, including doctors, have deficiencies in CN, and that this may affect patient safety. In our previous research using the Medical Interpretation and Numeracy Test (MINT), we found that many doctors in training in the UK had low CN. However, participants were not permitted to use calculators when taking the MINT, even though staff has access to calculators in clinical practice. Therefore, our original study may have underestimated doctors’ CN, compared to …

An Exploration Of The Perceived Usefulness Of The Introductory Statistics Course And Students’ Intentions To Further Engage In Statistics, Rossi A. Hassad

Numeracy

Students’ attitude, including perceived usefulness, is generally associated with academic success. The related research in statistics education has focused almost exclusively on the role of attitude in explaining and predicting academic learning outcomes, hence there is a paucity of research evidence on how attitude (particularly perceived usefulness) impacts students’ intentions to use and stay engaged in statistics beyond the introductory course. This study explored the relationship between college students’ perception of the usefulness of an introductory statistics course, their beliefs about where statistics will be most useful, and their intentions to take another statistics course. A cross-sectional study of 106 …

Using Visual Analogies To Teach Introductory Statistical Concepts, Jessica S. Ancker, Melissa D. Begg

Numeracy

Introductory statistical concepts are some of the most challenging to convey in quantitative literacy courses. Analogies supplemented by visual illustrations can be highly effective teaching tools. This literature review shows that to exploit the power of analogies, teachers must select analogies familiar to the audience, explicitly link the analog with the target concept, and avert misconceptions by explaining where the analogy fails. We provide guidance for instructors and a series of visual analogies for use in teaching medical and health statistics.

Clinician Numeracy: Use Of The Medical Interpretation And Numeracy Test In Foundation Trainee Doctors, Anne A. Taylor, Lucie M. Byrne-Davis

Numeracy

Patient safety is a priority in healthcare today. Good clinician numeracy in doctors contributes to patient safety, since it is essential for accuracy in prescribing, and in data interpretation. Evidence, however, suggests that although doctors are assumed to be highly numerate, they often make errors in drug dose calculation and struggle to interpret medical statistics. Having developed a new assessment measure, the Medical Interpretation and Numeracy Test (MINT), we describe its use to evaluate clinician numeracy in 135 recently qualified doctors in the UK ("foundation trainees," i.e., in their first two years post-graduation). The maximum possible test score was 43; …

Parts Of The Whole: Error Estimation For Science Students, Dorothy Wallace

Numeracy

It is important for science students to understand not only how to estimate error sizes in measurement data, but also to see how these errors contribute to errors in conclusions they may make about the data. Relatively small errors in measurement, errors in assumptions, and roundoff errors in computation may result in large error bounds on computed quantities of interest. In this column, we look closely at a standard method for measuring the volume of cancer tumor xenografts to see how small errors in each of these three factors may contribute to relatively large observed errors in recorded tumor volumes.

Clinician Numeracy: The Development Of An Assessment Measure For Doctors, Anne A. Taylor, Lucie M. Byrne-Davis

Numeracy

Low numeracy in doctors poses serious risks to patient safety because inaccurate drug dose calculation may lead to under-treatment or overdose, while erroneous data interpretation affects medical decision making. Most research on numeracy in healthcare focuses on health numeracy in patients, while research on numeracy in doctors, “clinician numeracy”, is limited, partly due to the lack of a suitable assessment measure. We developed a new assessment, the Medical Interpretation and Numeracy Test (MINT), to assess clinician numeracy. The MINT tests computational, analytical and statistical constructs, using a combination of questions validated in other studies, and new test material specifically designed …

The Problem Of Too Many Statistical Tests: Subgroup Analyses In A Study Comparing The Effectiveness Of Online And Live Lectures, David M. Lane

Numeracy

The more statistical analyses performed in the analysis of research data, the more likely it is that one or more of the conclusions will be in error. Multiple statistical analyses can occur when the sample contains several subgroups and the researchers perform separate analyses for each subgroup. For example, separate analyses may be done for different ethnic groups, different levels of education, and/or for both genders. Media reports of research frequently omit information on the number of subgroup analyses performed thus leaving the reader with insufficient information to assess the validity of the conclusions. This article discusses the problems with …

Dyscalculia: Characteristics, Causes, And Treatments, Gavin R. Price, Daniel Ansari

Numeracy

Developmental Dyscalculia (DD) is a learning disorder affecting the ability to acquire school-level arithmetic skills, affecting approximately 3-6% of individuals. Progress in understanding the root causes of DD and how best to treat it have been impeded by lack of widespread research and variation in characterizations of the disorder across studies. However, recent years have witnessed significant growth in the field, and a growing body of behavioral and neuroimaging evidence now points to an underlying deficit in the representation and processing of numerical magnitude information as a potential core deficit in DD. An additional product of the recent progress in …