Articles

Table of Contents

Biostatistics

Biostatistics

Name of Article	Click on Link*	Contributor
Common Biostatistical Problems	Connect	CTSpedia
Correlation	Connect	CTSpedia
Estimation versus Hypothesis Testing	Connect	CTSpedia
Geocoding: What it is and why is it necessary	Connect	CTSpedia
Intention to Treat Analysis		Gerard E. Dalllal, PhD
Interpreting Results: How to phrase conclusions that reflect estimates and confidence intervals, not just p-values	Connect	CTSpedia
Logistic Regression		Gerard E. Dalllal, PhD
Nonparametric Statistics		Gerard E. Dalllal, PhD
P-value Fallacy	Connect	CTSpedia
Poisson Regression		Gerard E. Dalllal, PhD
Random Samples / Randomization		Gerard E. Dalllal, PhD
Student's t Test for Independent Samples		Gerard E. Dalllal, PhD
What is a p-value?		Ronald Thisted

*Click on connect or icon for article. CTSpedia articles are editable.

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Multiple Linear Regression

Name of Article	Click on Link*	Contributor
The Extra Sum of Squares Principle		Gerard E. Dalllal, PhD
How to Read the Output From Multiple Linear Regression Analyses		Gerard E. Dalllal, PhD
Introduction to Multiple Linear Regression		Gerard E. Dalllal, PhD
Introduction to Regression Models		Gerard E. Dalllal, PhD
The Meaning of Regression Coefficents		Gerard E. Dalllal, PhD
The Most Important Lesson You'll Ever Learn About Multiple Linear Regression Analyses		Gerard E. Dalllal, PhD
Partial Correlation Coefficients		Gerard E. Dalllal, PhD
Simplifying A Multiple Regression Equation		Gerard E. Dalllal, PhD
Student's t Test for Independent Samples Is A Special Case of Simple Linear Regression		Gerard E. Dalllal, PhD
Using the Bootstrap to Simplify a Multiple Regression Equation		Gerard E. Dalllal, PhD
What Does Multiple Regression Look Like?		Gerard E. Dalllal, PhD
What Does Multiple Regression Look Like? (Part 2)		Gerard E. Dalllal, PhD
Which Predictors Are More Important?		Gerard E. Dalllal, PhD
Why Is a Regression Line Straight?		Gerard E. Dalllal, PhD

*Click on connect or icon for article. CTSpedia articles are editable.

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Analysis of Variance

Biostatistics*

Name of Article	Click on Link*	Contributor
Analysis of Variance	Connect	CTSpedia
How to Read the Output From One-Way Analysis of Variance		Gerard E. Dalllal, PhD
Multiple Comparisons		Gerard E. Dalllal, PhD
Labeling Similar Means After Performing an Analysis of Variance		Gerard E. Dalllal, PhD
Single Factor ANOVA		Gerard E. Dalllal, PhD
A web page that creates the labels		Gerard E. Dalllal, PhD

*Click on connect or icon for article. CTSpedia articles are editable.

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Data Management

Name of Article	Click on Link*	Contributor
Computer Assisted Interviewing Software: A Primer	Connect	CTSpedia
Longitudinal Cohort Studies	Connect	CTSpedia
Using a National Database	Connect	CTSpedia
What is the Relational Database Model?	Connect	CTSpedia

*Click on connect or icon for article. CTSpedia articles are editable.

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Ontology Mappers

Name of Site	Click on Link*	Contributor
Draft - Taxonomy Collaboration - Vanderbilt		Department of Biostatistics, Vanderbilt University
NCBO Bioportal		National Center for Biomedical Ontology's Bioportal Site

*Click on connect or icon for article. CTSpedia articles are editable.

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Epidemiology and Research Design

Name of Article	Click on Link*	Contributor
Basics of Study Design		Gerard E. Dalllal, PhD

*Click on connect or icon for article. CTSpedia articles are editable.

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Case Studies

• Sample Size
• Outliers
• Length Bias in Flu Symptom Duration Measurements
• Small Samples

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Study Design Categorizer

• Study Design Categorizer

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Grants and Awards

• NIH Mentored Career Development (K) Awards

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Writing

Examples of how to phrase common types of content.

• Interpreting Results: How to phrase conclusions that reflect estimates and confidence intervals, not just p-values.
• Follow-up Time Description of follow-up time in a time-to-event or survival study.

* Responding to peer reviews

• Reporting Power: Example of how to reply to requests for post-hoc power calculations, or for a priori

power calculations for a completed study.

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Other

• CTSA Publications

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