Tutorials / Videos

C-International Tutors

We are Educational Consultants committed to bringing knowledge and skills to the doorsteps of students/trainees, and independent researchers across the globe


Online Consultations or Tutorials

We offer online tutorials on Statistics, Principles of Epidemiology and Research Methodology for students/trainees (both undergraduate and postgraduate) in the higher institutions of learning.


We also offer online consultation on various aspects of research (including Development of Protocol/Proposal; Development and Validation of Data Collection Instrument; Electronic Data Collection using Open Data Kit or Google Forms; Data Analysis, Interpretation and Presentation of Results; and Dissertation/Thesis writing) for postgraduate students/trainees [including Masters, PhD and Part II (Fellowship) candidates of the postgraduate medical colleges], and independent researchers.


If you wish to have an Online Tutorial session with us on any of the topics covered in our videos or on other topics in Statistics, Epidemiology and Research design; or you wish to have an Online Consultation session with us regarding your research, please make your request for a quote through the online request platform at:




The topics covered in Statistics include (but not limited to):

*    Measures of Central Tendency (Mean, Median, Mode)

*    Measures of Dispersion [Range, Standard Deviation, Interquartile Range (IQR), Coefficient of Variation, etc.]

*    Methods of Data Presentation

*    Normal and Skewed Distributions

*    Measures of Association

*    Correlation and Regression

*    Probability Theory

*    Binomial test

*    Principles of Parameters Estimation

*    Introduction to Hypothesis Testing

*    Z test and One Sample T test

*    Independent T test

*    Paired T test

*    Analysis of Variance (ANOVA)

*    Introduction to Non-Parametric test

*    Mann-Whitney U test

*    Wilcoxon Rank Sum test

*    Wilcoxon Matched Pair Signed Rank test

*    Kruskal-Wallis Rank Sum test


Principles of Epidemiology

The topics covered in Principles of Epidemiology include (but not limited to):

*    Epidemiological Concepts

*    Theories of Disease Causation

*    Determinants of Disease

*    Ecological Models of Disease Occurrence

*    Disease Control

*    Measures of Morbidity

*    Measures of Mortality

*    Descriptive Epidemiology

*    Case Control Studies

*    Cohort Studies

*    Experimental Studies

*    Standardization of Rates (Direct and Indirect methods)

*    Introduction to Screening Tests

*    Validation of Screening Tests

*    Epidemiologic Surveillance

*    Outbreak Investigation and Response

*    Integrated Disease Surveillance and Response


Research Methodology

The topics covered in Research Methodology include (but not limited to):

*    Introduction to Research

*    Introduction to Study Designs

*    How to write a Research Protocol / Proposal

*    Development of Instrument of Data Collection

*    Validation of Instrument of Data Collection

*    Sample Size Estimation in Research

*    Sampling Techniques in Research

*    Introduction to Electronic Data Collection in Research

*    How to Collect Data with Open Data Kit (ODK)

*    How to Design and Collect Data with Google Forms

*    Introduction to Data Analysis, Interpretation and Presentation

*    Univariate Analysis in Research

*    Bivariate Analysis in Research

*    Multivariate Analysis in Research

*    Validation Analysis

*    Survival Analysis


Educational Videos

We produce educational videos on Data Analysis for students/trainees (both undergraduate and postgraduate) in higher institutions of learning


The topics covered in our videos include:

How to Create a Database in SPSS

Descriptive Statistics 1 (How To Run Frequencies and Compute The Mean, Mode and Median In SPSS)



Tutorial Illustrations

The topics covered in our tutorial illustrations include:

How to Join a Meeting Online with Zoom

How to Design the Template of a Dissertation