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Introduction

After completing this module you should be able to:

  • Specify the type of study you are undertaking, and define your study population.
  • Explain the difference between matching, tracing and presence at census, and the implications for using census and events data.
  • Exclude from your study population any subjects that will cause data analysis problems.

The LS is a rich source of data than can be used for several kinds of study. Users need to select parts of the LS appropriate to their study design. You can use this module to work out what selection you need for your study.

Over the course of the module, we will answer a series of research questions designed to illustrate the different types of study that can be done using LS data. Each of these study types puts a different type of constraint on the study population.