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Epidemiology Basics

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Brittany Badger

on 11 September 2016

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Transcript of Epidemiology Basics

Week 3: Epidemiology Basics
Agenda
Practice
Epidemiology
Epidemiology
“The study of the
DISTRIBUTION
and
DETERMINANTS
of health-related states or events in specified populations."

Measurements of Health
Physicians
Person
Place
Time
Epidemiologist
Person
Demographics,
How many
Place?
Person?
Time?
Disease Frequency
Incidence vs Prevalence
Standard Measures
Life Expectancy
Years of Potential Life Lost
Prevalence
Incidence
Number of NEW cases for a specified time (ACUTE)
Number of TOTAL cases (OLD + NEW) for a specified time (CHRONIC)
Mortality vs Morbidity



Allow us to compare disease and follow trends
Descriptive Studies
Analytic Studies
2nd study - the 2nd "D"
Asks "Why" = tests hypothesis
Person - Place - Time
Limitations?
Review Week 2
Questions - Media Literacy
Questions - CEL Contract
Questions - other?
Module 3 LO

Distribution
Determinants
The 2 D's
So what is Endemic?
Pandemics
Epidemics
Outbreaks
Localized (very confined)
2 or more cases
Extends beyond a local community rapidly
Global epidemics
# of cases are greater than expected
Person?
Age
Sex
Genetics
Biology
Environment
Seasons

Place?
Time?
?
IBIS-PH
Cryptosporidium Outbreak
2002-06 = 16 vs 2007 = 1600+
Person, place and time
Common terms to describe disease trends
IBIS-PH Introduction
Media Literacy Assignment
Review:
Levels of Prevention
Primary
Delays or prevents the onset of illness or injury - no symptoms
Secondary
Steps taken to diagnose early before disease becomes severe
Tertiary
Aims at rehabilitation after severe disease
Types of epidemiological studies
Next Time:
Calculation =
# New Cases
Total at Risk
Calculation =
# New + Old Cases
Total Population
First Study
The 1st "D"
IBIS: IM
17.6
Births in Utah
Birth Rates
17.6 = Utah
12.5 = US

Rates are per 1,000 residents
"Processed data is information.
Processed information is knowledge.
Processed knowledge is Wisdom.”
― Ankala V Subbarao
Classification of Disease
Communicable
Caused by a specific agent/toxin that CAN be transmitted
Chain of Infection

Noncommunicable
Disease that CANNOT be transmitted
These deplete resources FAST!
Why?
Other
SEM
factors?
Review this week's learning outcomes
Recap 3
Other due dates
Place
Geographic location

Time
Day/night
Month, season
Full transcript