Meet Our Dissertation Statistics Consultants

biometrics healthcare statistical data analysisRebecca Andrews, PhD

PhD in Biometrics and Statistics

Dr. REBECCA ANDREWS holds a PhD in Biometrics and Statistics with specialization in non-parametric methods. With over 20 publications, she is the co-author and the biostatistician of studies published in top rank medical journals such as the Journal of the American Medical Association (JAMA), the American Journal of Public Health (AJPH) and Pediatric Emergency Care and Vaccine.

During her graduate years she worked as a fellow researcher at the London School of Economics. After she earned her doctorate Dr. Andrews worked as biostatistician at Columbia University Medical Center and at the Mailman School of Public Health. During her extensive career as biostatistician she has advised many graduate students with their dissertations in the fields of medicine, sociology, nursing, and psychology.

  • Expert in mobile health (conducted the first largest randomized clinical trials in the country to determine the impact of text messaging to improve immunization rates and medication adherence in hard-to-reach populations).
  • Conducted research in clinical pediatrics (immunizations, URIs, obesity).
  • Expertise applying hierarchical models to complex data structures.
  • Bilingual Spanish-English; able to translate/adapt surveys or other data collection into Spanish.

Dr. Andrews walks her students through all the steps needed for completing solid and sound research: (1) formulating the study hypothesis; (2) selecting and collecting data (e.g., interviews, surveys, administrative records); (3) designing a sample plan (simple random, systematic, stratified or clustered sampling, or more complex designs); (4) database structure; (5) data cleaning and consistency checks; (6) appropriate analysis from data description and bivariate analysis (student t-test, chi-square, McNemar test of marginal homogeneity) to multivariable analysis (linear regressions, MANOVA, mixed-effects or multilevel models). She helps students select the most appropriate techniques given the nature of their data—continuous or categorical variables, small or large samples.

Dr. Andrews has expertise in working and programming with various statistical packages such as SPSS and Stata.


"It was a pleasure working with Rebecca. I particularly appreciated her flexibility in scheduling meetings, her promptness in responding to my statistical questions, and her assistance with conducting sophisticated analyses related to my thesis project." Annika Hofstetter, Research Fellow, New York- Presbyterian Hospital, Columbia University Medical Center 

“Rebecca provided me with invaluable technical, statistical support and training for my dissertation. She challenged my thinking, conducted flawless analytical work, and made me a stronger quantitative researcher. Rebecca's mastery of statistics and different modeling and analytical techniques made solving complex data challenges easy and manageable.  She was 100 percent reliable, thoughtful, understanding, and engaged. She often re-arranged her schedule to meet last-minute dissertation deadlines. Even though Rebecca was not a formal member of my dissertation committee, I consider her my most active member. I am certain that by working with Rebecca, I saved about 6 months of time.” Allison Goldberg,  Mailman School of Public Health Health, PhD graduate         

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Dr. Victoria Briones - Organizational PsychologyVictoria Briones, PhD

Organizational Psychology

DR. BRIONES, a graduate from Columbia University and former fellow at the Harvard Kennedy School of Government, taught Applied Regression Analysis and Research Methods to graduate students. In the last eight years, Victoria has worked as a dissertation and statistics consultant, helping graduate students in psychology, education, nursing, biology, and business formulate/hone their study hypotheses, arrive at better operational definitions for their study variables, improve procedures to increase the internal and the external validity of their studies, test their study hypotheses, analyze their resulting data, and understand their results.

In addition to having a strong grasp of research methods, Victoria's primary areas of expertise are in testing moderation and mediation hypotheses (using SPSS) and in testing path, measurement (via a confirmatory factor analysis or CFA), and structural models using the AMOS, LISREL, EQS, and MPlus programs. She is also able to explain relatively complex procedures and results to clients who have minimal knowledge of research methods and statistics.

Victoria is familiar with non-parametric procedures such as Mann-Whitney, Kruskal-Wallis, and chi-square tests. But her strengths lie in conducting basic (e.g., Pearson correlations, t-tests, and ANOVAs) and complex parametric procedures such as exploratory factor analysis (EFA), regression (i.e., linear, logistic, and multinomial), mixed-ANOVA, MANOVA, and discriminant analysis. Moreover, Victoria provides her clients with concise and coherent summaries of the results of these procedures.

Scope: research methods, reliability analyses, t-tests, ANOVA, repeated-measures ANOVA, ANCOVA, exploratory and confirmatory factor analyses, multiple linear regression, logistic regression, MANOVA, structural equation modeling (AMOS, LISREL, and EQS).

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statistician Linda DeaconLinda Deacon

Statistical Analysis and Interpretation | APA Formatted Tables and Figures | Survey Instruments

Psychology, Medicine, Nursing, Theology and Sociology

Linda Deacon has served as an independent statistical consultant since 1985. She has coordinated the data management and statistical analysis of state and federally funded longitudinal and multi-center research. She has co-authored several articles published in the fields of medicine and psychology and has assisted in the editing of statistical textbooks and documentation for statistical software. She has designed and assisted in the development of survey instruments currently in use at various medical centers, universities and county regional centers. She regularly advises doctoral candidates on the formulation, statistical analysis and interpretation of research hypotheses.

Survey design, formulating hypotheses, content organization, data analysis, results analysis, graphs and tables, PowerPoint presentations.


"Without a doubt Linda Deacon is an incredible statistician! Over the past 10 years Linda has assisted me in countless research projects. I would not be where I am in my career today without her expertise. Not only is she the warmest human being around, she is brilliant and easy to work with."
Susan Regas, PhD
Distinguished Professor of Clinical Psychology

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biometrics healthcare statistical data analysisSally Jordan

Master's Thesis and Doctoral Dissertation Help
Nursing, Social Work, Sociology, Psychology, Marriage and Family Therapy, Education, Business, and Technology
Qualitative Research Methodologist and Quantitative Research Methodologist

Dr. Sally Jordan holds a diploma in nursing, an undergraduate degree in psychology, and a MSW and PhD in social work from The Ohio State University. Dr. Jordan practiced critical care and coronary care nursing for 15 years in the hospital settings, and served as a an assistant head nurse, head nurse, and assistant director of nursing education. She also served as a director of nursing agency.

As a social worker, she worked in child welfare investigating child abuse cases. She has been a full time faculty member for over 20 years, and has conducted field research in the areas of homelessness, mental illness, addiction, child welfare, and community partnerships.

  • Academic Writing
  • Creating Hypothesis Statements
  • Data Collection (Online)
  • Development Editing
  • Field Testing
  • Hypothesis Testing
  • Instrument Development
  • IRB/Ethics
  • Pilot Testing
  • Program Evaluation
  • Qualtrics Online Survey Software
  • Sample Size Estimates
  • Statistical Analysis (SPSS)– ANOVA, Chi-Square, Cronbach's Alph,
  • Pearson's r, Multiple Regression, Spearman's Rho, T-Tests, Etc…
  • Qualitative Data Analysis
  • Study Design (Qualitative and Quantitative)
  • Survey Design
  • Survey Monkey Online Survey Software

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Jeff Laurence, Science Editor: Chemistry, Biology, Biochemistry, Toxicology, PharmacologyJeff Laurence

Science Editor: Chemistry, Biology, Biochemistry, Toxicology, Pharmacology

Dr. Jeff Laurence has over 30 years of combined experience in academia and in the private research and development business sector. In addition to a bachelor's degree in Biology and Chemistry, he obtained his MS in Toxicology from the University of Kentucky and his Ph.D. in Comparative Biochemistry from the University of California, Berkeley. Throughout his career, he has mentored many students and employees. He has a particularly effective style of teaching and enjoys working with graduate students at all phases of their studies from project inception and design to obtaining their degree.

He offers comprehensive research guidance with a keen sense of content organization and assistance in the clear and focused presentation of data and study results. He brings a diverse range of writing skills to his students and clients as well, including writing and proofreading assistance with their theses, dissertations and preparation of research papers for publication in peer-reviewed journals and other scientific texts.

Thesis and Dissertation helpHe has served as an editorial reviewer for a number of scientific journals including Pesticide Science, Biochemical Pharmacology, Toxicology and Applied Pharmacology and Life Sciences and therefore has a thorough understanding of what it takes to prepare an acceptable manuscript for publication. He can also help you correspond with reviewers in the publication process.

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statistician Rick Oaks - mixed methods researchRick Oaks, PhD

Education - Psychology - Sociology

RICK OAKS studied psychology and sociology at Harvard, received his Ph.D. in clinical psychology from Michigan, then did two post-doctoral fellowships at Yale. Since then he has taught many courses on research methods at both the undergraduate level and in a doctoral program in higher education leadership.

He is an expert in mixed methods research; that is, the sort that combines interviewing and questionnaires.

  • If you lean toward qualitative research, he can help you plan interviews that will elicit vivid, detailed narratives from your participants, and show you how to interpret them.
  • If you are more interested in the quantitative side of things, he can help you turn your informal hunches into testable hypotheses, design questionnaires that will actually measure whatever is of interest to you, and analyze the results statistically.
  • Perhaps most important, as an exceptionally thoughtful editor, he can help you express your most complicated ideas clearly and gracefully: the kind of writing of which you will be proud, and that your friends, colleagues—and dissertation committee—will read with pleasure.

Although Rick teaches statistics (among other things), his first love is interview research. He has published three books and many articles in the field. These include studies on the meaning of work in the lives of mid-career businessmen, the family tensions that sometimes arise when first-generation college students become more educated than their parents, and the way that students can sometimes discover who they really are by temporarily dropping out of college.

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statistician Richard PollardRichard Pollard, PhD

Psychology, Sociology, Management, Leadership, Organization Development, Organizational Behavior, Cross-Cultural Management/International Business

RICHARD POLLARD (Ph.D. Harvard University) has held professorships at Northeastern University, University of Arizona, and Lewis & Clark College. He has served as chair or reader on numerous doctoral dissertations in management, organizational development, leadership, nursing, homeland security, and social/environmental sustainability.

He designed the doctoral programs at Colorado Technical University and served as the founding Chancellor of CTU's Institute for Advanced Studies, where he oversaw all dissertation chairs and readers. He has taught statistics and research methods at all levels from undergraduate through doctoral.

His primary areas of expertise include organizational behavior, organization development, small groups and teams, leadership, psychology, sociology, research methods and statistics.

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