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Journal ArticleDOI

Research Commentary---Too Big to Fail: Large Samples and the p-Value Problem

TLDR
This research commentary recommends a series of actions the researcher can take to mitigate the p-value problem in large samples and illustrates them with an example of over 300,000 camera sales on eBay.
Abstract
The Internet has provided IS researchers with the opportunity to conduct studies with extremely large samples, frequently well over 10,000 observations. There are many advantages to large samples, but researchers using statistical inference must be aware of the p-value problem associated with them. In very large samples, p-values go quickly to zero, and solely relying on p-values can lead the researcher to claim support for results of no practical significance. In a survey of large sample IS research, we found that a significant number of papers rely on a low p-value and the sign of a regression coefficient alone to support their hypotheses. This research commentary recommends a series of actions the researcher can take to mitigate the p-value problem in large samples and illustrates them with an example of over 300,000 camera sales on eBay. We believe that addressing the p-value problem will increase the credibility of large sample IS research as well as provide more insights for readers.

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Citations
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Journal ArticleDOI

UV upturn versus UV weak galaxies: differences and similarities of their stellar populations unveiled by a de-biased sample

TL;DR: In this article, the spectral energy distribution (SED) fitting results from magphys made available by the GAMA collaboration are used to compare the distributions from the SED fitting directly, as well as investigating the differences in correlations between their parameters, and finally by using principal component analysis.
Journal ArticleDOI

Postoperative Rehabilitation May Reduce the Risk of Readmission After Groin Hernia Repair.

TL;DR: Older patients and those with greater comorbidity are at elevated risk of readmission after inguinal hernia repair, and postoperative rehabilitation may reduce this risk.
Journal ArticleDOI

Deriving estimates of individual variability in genetic potentials of performance traits for 3 dairy breeds, using a model of lifetime nutrient partitioning

TL;DR: This model is of value as a tool to derive estimates of genetic potentials of milk yield, milk composition, body reserve usage, and growth for different genotypes of cow, and can be used to separate genetic variability in performance between individual cows from environmental noise.

iPad use to Enhance Conversations between Persons with Dementia and their Family Caregivers

Kelsey Dynes
TL;DR: In this article, the purpose of the study was to determine whether persons with dementia and their family caregivers could be educated and trained to use Person-Centred Communication (PCC) while using an iPad-based electronic conversational memory notebook.
References
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Journal ArticleDOI

Things I Have Learned (So Far).

TL;DR: The application of statistics to psychology and the other sociobiomedical sciences has been studied extensively as discussed by the authors, including the principles "less is more" (fewer variables, more highly targeted issues, sharp rounding off), "simple is better" (graphic representation, unit weighting for linear composites), and "some things you learn aren't so."
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To Explain or to Predict

TL;DR: The distinction between explanatory and predictive models is discussed in this paper, and the practical implications of the distinction to each step in the model- ing process are discussed as well as a discussion of the differences that arise in the process of modeling for an explanatory ver- sus a predictive goal.
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Examining the Relationship Between Reviews and Sales: The Role of Reviewer Identity Disclosure in Electronic Markets

TL;DR: It is suggested that identity-relevant information about reviewers shapes community members' judgment of products and reviews and shows that shared geographical location increases the relationship between disclosure and product sales, thus highlighting the important role of geography in electronic commerce.
Journal ArticleDOI

Examining the Relationship Between Reviews and Sales: The Role of Reviewer Identity Disclosure in Electronic Markets

TL;DR: In this paper, the authors used a unique data set based on both chronologically compiled ratings as well as reviewer characteristics for a given set of products and geographical location-based purchasing behavior from Amazon, and provided evidence that community norms are an antecedent to reviewer disclosure of identity-descriptive information.
Book

Regression Methods in Biostatistics: Linear, Logistic, Survival, and Repeated Measures Models

TL;DR: McCoch as discussed by the authors provides a unified, in-depth, readable introduction to the multipredictor regression methods most widely used in biostatistics: linear models for continuous outcomes, logistic models for binary outcomes, the Cox model for right-censored survival times, repeated-measures models for longitudinal and hierarchical outcomes, and generalized linear model for counts and other outcomes.
Trending Questions (1)
What are the positives of large samples in research?

Large samples in research provide researchers with more statistical power, increased generalizability of findings, and the ability to detect smaller effect sizes.