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Types of Study Designs: Observational Studies

by Raywat Deonandan, PhD
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    Hello and welcome back to epidemiology. In today's lecture we're going to get into the meat and potatoes of population epidemiology, that is the design of observational studies, so much of my personal consulting work involves advising people on how to design studies and how to critique their existing designs, so I think you'll find this quite interesting. After today's lecture, you'll be familiar with the main observational study designs, it's not an exhaustive list, but we get to the main ones. You will also know the difference between prospective and retrospective designs and you’ll know why sometimes, we like to match subjects across study designs and study groups. You'll also know why some designs are more appropriate than others and that I want for you to be able to do is to be able to tell when to use certain designs in what contexts. So first let's go over how our various designs splay across the research universe. You'll recall that we tend to have either qualitative or quantitative research. Qualitative is what the social scientists tend to do and quantitative involves numbers and statistics. Amongst quantitative designs we have descriptive or analytical approaches. Under descriptive we are describing a scenario or a sample, who gets the disease, when do they get it, where do they get it, who, what, where, when essentially. But the analytical approach involves an association between two or more variables and we either have an observational scenario or an experimental scenario. The difference is that in experiments you the investigator are manipulating a variable, are causing a group of subjects to have an experience that they otherwise would not have had, whereas the observational scenario you're letting the universe unfold as it will and you're just observing. Amongst the observational designs, we have the...

    About the Lecture

    The lecture Types of Study Designs: Observational Studies by Raywat Deonandan, PhD is from the course Types of Studies. It contains the following chapters:

    • General Categories of Population Research Designs
    • Cross-Sectional Study
    • Case-Control Study
    • Cohort Study
    • Summary - Study Designs
    • Matched Studies
    • Learning Outcomes

    Included Quiz Questions

    1. Case-control study
    2. Cohort
    3. RCT
    4. Cross-sectional
    1. Cohort study
    2. Case-control
    3. RCT
    4. Cross-sectional
    1. Cross-sectional
    2. Cohort
    3. Case-control
    4. RCT
    1. Case-control
    2. Cohort
    3. Cross-sectional
    4. RCT

    Author of lecture Types of Study Designs: Observational Studies

     Raywat Deonandan, PhD

    Raywat Deonandan, PhD


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