{[ promptMessage ]}

Bookmark it

{[ promptMessage ]}

HED 343 studydesigns2008overview

HED 343 studydesigns2008overview - Overview of Study...

Info icon This preview shows pages 1–17. Sign up to view the full content.

View Full Document Right Arrow Icon
Overview of Study Designs in Epidemiological Research
Image of page 1

Info icon This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
Fundamental Assumption in Epidemiology Disease doesn’t occur in a vacuum Disease is not randomly distributed throughout a population Epidemiology uses systematic approach to study the differences in disease distribution in subgroups Allows for study of causal and preventive factors
Image of page 2
Components of Epidemiology Measure disease frequency Quantify disease Assess distribution of disease Who is getting disease? Where is disease occurring? When is disease occurring? Formulation of hypotheses concerning causal and preventive factors Identify determinants of disease Hypotheses are tested using epidemiologic studies
Image of page 3

Info icon This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
Types of primary studies Descriptive studies describe occurrence of outcome Analytic studies describe association association between exposure and outcome
Image of page 4
Basic Question in Analytic Epidemiology Are exposure and disease linked? Exposure Disease
Image of page 5

Info icon This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
Basic Questions in Analytic Epidemiology Look to link exposure and disease What is the exposure? Who are the exposed? What are the potential health effects? What approach will you take to study the relationship between exposure and effect? Wijngaarden
Image of page 6
Basic Research Study Designs and their Application to Epidemiology
Image of page 7

Info icon This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
Big Picture To prevent and control disease In a coordinated plan, look to identify hypotheses on what is related to disease and may be causing it formally test these hypotheses Study designs direct how the investigation is conducted
Image of page 8
What designs exist to identify and investigate factors in disease?
Image of page 9

Info icon This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
Timeframe of Studies Prospective Study - looks forward, looks to the future, examines future events, follows a condition, concern or disease into the future time Study begins here
Image of page 10
Timeframe of Studies Retrospective Study - “to look back”, looks back in time to study events that have already occurred time Study begins here
Image of page 11

Info icon This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
Study Design Sequence Case reports Case series Descriptive epidemiology Analytic epidemiology Clinical trials Animal study Lab study Cohort Case- control Cross- sectional Hypothesis formation Hypothesis testing
Image of page 12
Descriptive Studies Case-control Studies Cohort Studies Develop hypothesis Investigate it’s relationship to outcomes Define it’s meaning with exposures Clinical trials Test link experimentally Increasing Knowledge of Disease/Exposure
Image of page 13

Info icon This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
Descriptive Studies
Image of page 14
Case Reports Detailed presentation of a single case or handful of cases Generally report a new or unique finding e.g. previous undescribed disease e.g. unexpected link between diseases e.g. unexpected new therapeutic effect e.g. adverse events
Image of page 15

Info icon This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
Case Series
Image of page 16
Image of page 17
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}

What students are saying

  • Left Quote Icon

    As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

    Student Picture

    Kiran Temple University Fox School of Business ‘17, Course Hero Intern

  • Left Quote Icon

    I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

    Student Picture

    Dana University of Pennsylvania ‘17, Course Hero Intern

  • Left Quote Icon

    The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

    Student Picture

    Jill Tulane University ‘16, Course Hero Intern