Applied Multivariable Statistical Analysis: Online (3 Day)

Day 1
Overview of Multivariate analysis: An introduction to multivariate analysis and the different issues.

Issues with data: There are many issues analysts face when deciding on the appropriateness of different multivariate analysis techniques. A brief introduction to these issues and discussion of data integration, missing data, and an introduction to Stata's multiple imputation techniques.

Multiple Regression: Multiple regression analysis is often used to model the relationship between a single dependent interval variable with several varying types of independent variables. This technique is often used in economics for prediction and forecasting (e.g. national economy), and in social research for evaluating what determines an effective program (e.g. the best predictors of success in high-school), or determining which personality variable best predicts a social trait.

Day 2
Binary Logistic Regression: Binary logistic regression is used when there is a binary dependent variable and several varying types of independent variables. Logit analysis is used to predict the probability of an event in the dependent variable. The analysis is used widely in health research where the dependent variable is the outcome of a disease or health condition (e.g. lung cancer), or in social research where the outcome is a certain event, (e.g. employment status).

Ordinal Logistic Regression: Ordinal logistic regression is used when there is an ordinal dependent variable and several varying types of independent variables. Logit analysis is used to predict the probability of an event in the dependent variable.

Survival analysis: Survival analysis data deals with the outcome being the waiting time until the occurrence of a well-defined event. Observations are censored, in the sense that for some units the event of interest has not occurred at the time the data are analysed and explanatory variables are used to control for the effect on the waiting time. The point of survival analysis is to follow subjects over time and observe at which point in time they experience the event of interest (e.g. cancer). Survival analysis is often referred to as time to event analysis, mainly used in biomedical sciences where the interest is in observing time to death. However, over the past few years this analysis has been extended to other areas of research such as the social sciences (e.g. forensic analysis, employment analysis, marriage) and even engineering sciences (e.g. failure time analysis). An introduction to competing risks survival analysis will also be covered in this course.

Day 3
Exploratory Factor analysis: Exploratory Factor analysis is used to obtain distinct new variables of factors. Factor analysis looks at the interrelationships among a large number of variables and explains them in terms of their underlying factors or dimensions. This technique is often used in social science to measure a trait that cannot be measured directly (e.g. self-esteem).

Cluster analysis: Cluster analysis is an exploratory technique that uses a number of different algorithms and methods to combine observations into previously unknown mutually exclusive natural groups or clusters based on specific similarities. For example, social researchers have used this technique to produce unique groups based on socio-economic profiles.

Correspondence analysis: Simple correspondence analysis provides graphical representations of two-way frequency tables to improve the researcher’s understanding of any similarities and associations between the variables. Thus, it is especially good for the analysis of large contingency tables. For example, it could be used to investigate various crimes across the different states.