Karen Grace-Martin, the founder and president of The Analysis Factor, is a professional statistical consultant with Masters degrees in both applied statistics and social psychology.
Her career started in psychology research, where her frustration in applying statistics to her data led her to learn more statistics. She soon realized that her favorite part of research was data analysis, leading to a career change. Her background in experimental research and working with real data has been invaluable in understanding the challenges that researchers face in using statistics.
Karen was a professional statistical consultant at Cornell University for seven years before founding The Analysis Factor. Karen has worked with clients from undergraduate honors students on their first research project to tenured Ivy League professors, as well as non-profits and businesses. Her ability to understand what researchers need and to explain technical information at the level of the researcher’s understanding has been one of her strongest assets as a consultant. She treats all clients with respect, and derives genuine satisfaction from the relief she hears in their voices when they realize that someone can help them.
Before consulting, Karen taught statistics courses for economics, psychology, and sociology majors at the University of California, Santa Barbara and Santa Barbara City College. She has co-written an introductory statistics textbook with Stephen Sweet: Data Analysis with SPSS*. Karen has developed and presented many statistics workshops, most recently on missing data, logistic regression, and interpreting regression parameters.
*The Book
The Craft of Statistical Analysis Webinars
All of these were taught by Karen and access to all recordings are available at no charge.
- Fixed and Random Factors in Mixed Models
- Principal Component Analysis
- Approaches to Missing Data: The Good, the Bad, and the Unthinkable
- Effect Size Statistics
- Binary, Ordinal, and Multinomial Logistic Regression for Categorical Outcomes
- Standard Non-Deviation: The steps for staying out of the weeds in any data analysis
- Understanding Probability, Odds, and Odds Ratios in Logistic Regression
- Interpreting Linear Regression Coefficients: A Walk Through Output
Karen’s Workshops
Level: Advanced
Software Used: SPSS, SAS, R, Stata
Level: Intermediate
Software Used: SPSS, SAS, R, Stata
Level: Advanced
Software Used: SPSS, SAS, R, Stata
Level: Advanced
Software Used: SPSS, SAS, R, Stata
Publications
Todd JT, Stuart A, Lintzenich CR, Wallin J, Grace-Martin K, Butler SG. 2013. Stability of aspiration status in healthy adults. Ann Otol Rhinol Laryngol, 122(5):289-93.
Lester S, Langmore SE, Lintzenich CR, Wright SC, Grace-Martin K, Fife T, Butler SG. 2013. The effects of topical anesthetic on swallowing during nasoendoscopy. Laryngoscope, 123(7):1704-8. doi: 10.1002/lary.23899. Epub 2013 Apr 2.
Todd JT, Butler SG, Plonk DP, Grace-Martin K, Pelletier CA. 2012. Effects of chemesthetic stimuli mixtures with barium on swallowing apnea duration. Laryngoscope, 122(10):2248-51. doi: 10.1002/lary.23511. Epub 2012 Sep 7.
Todd JT, Butler SG, Plonk DP, Grace-Martin K, Pelletier CA. 2012. Main taste effects on swallowing apnea duration in healthy adults. Otolaryngol Head Neck Surg, 147(4):678-83. Epub 2012 Jun 7.
Plonk DP, Butler SG, Grace-Martin K, Pelletier CA. 2011. Effects of chemesthetic stimuli, age, and genetic taste groups on swallowing apnea duration. Otolaryngol Head Neck Surg,145(4):618-22. doi: 10.1177/0194599811407280. Epub 2011 Apr 26.
Drew P. Plonk, MD, Susan G. Butler, PhD, Karen Grace-Martin, MA, and Cathy A. Pelletier, PhD3. 2011. Effects of Chemesthetic Stimuli, Age, and Genetic Taste Groups on Swallowing Apnea Duration. Otolaryngology–Head and Neck Surgery 145(4) 618-622.
Steele CM, Bailey GL, Molfenter SM, Yeates EM, Grace-Martin K. 2010. Pressure profile similarities between tongue resistance training tasks and liquid swallows. J Rehabil Res Dev, 47(7):651-60.
Sweet, Stephen A. and Karen Grace-Martin. 2008. Data Analysis with SPSS, 4th Ed. Pearson Education.
Hutchens, Robert M. and Karen Grace-Martin. 2004. “Employer Willingness to Permit Phased Retirement: Why are Some More Willing Than Others?” Industrial & Labor Relations Review, 59(4): 525-46.
Chang, Yao-Chien, Karen Grace-Martin, & William B. Miller. 2004. Efficacy of Exogenous Applications for Reducing Upper Leaf Necrosis in Lilium ‘Star Gazer.’ HortScience, 39(2), 272-275.
Frongillo, Edward, Cara Olsen, Francoise Vermeylen, & Karen Grace-Martin (2000). A Taxonomy of Statistical Services: Organizing a University Statistical Consulting Office. Presented at the Joint Statistical Meetings, Indianapolis, IN.