Global Determinants Of Health, Intro to Epidemiological Study Designs Flashcards

1
Q

What is Population science?

A

Study of People and Populations

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2
Q

What are the 3 Causes and 3 Consequences

A

Causes:

Epidemiology: Study of disease in populations
Demography: Study of size and shape of populations
Statistics: Study of data in numerical form

Consequences:

Public Health
Health Promotion
Disease Prevention

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3
Q

Define Epidemiology

A

The study of the distribution and determinants of health related states, and the application of this study to the control of health problems

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4
Q

What are the 4 stages of the Demographic Transition Model

What are their characteristics in terms of birth/death rates and pop. Growth

A

1: Pre-Transition
- High birth rates, High fluctuating death rates
- Low population Growth

2: Early Transition
- Birth rate stays high, Death rate begins to fall
- Rapid Population growth

3: Late Transition
- Birth rate starts declining
- Population growth slows down

4: Post-Transition
- Low Birth, Death rates
- Negligible population growth

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5
Q

What factors affect Population Health?

Name 3 of these

A

Socio-Demographic factors

  • Demographic Transition
  • Economic Transition
  • Behavioural and Lifestyle factors
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6
Q

What factors affect Burden of Disease, Disability and Ageing

Name 3 of these

A

Population Factors

  • Age sex specific rates
  • Population size
  • Population shape
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7
Q

What do we use to make inferences about populations

What 3 things should this be, with respect to the population

A

Samples

  • Unbiased
  • Precise
  • Representative
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8
Q

What are the 3 Global Determinants of Health

A

Global Warming
Socio-Demographic Factors
Population Factors

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9
Q

Define Evidence Based Medicine

A

Conscientious, Judicious and Explicit use of Current Best Evidence in making decisions about the care of individual patients

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10
Q

What 3 things influence choosing the appropriate treatment for a patient

A

Clinical experience on the condition
External evidence
Patient’s concerns/ values

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11
Q

Compare the processes in Deductive and Empirical approaches

A

Deductive:
Identify the basic processes
Deduce the best procedures
Apply to clinical situation

Empirical:
Identify the basic processes
Postulate alternative procedures
Experimentally test ideas

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12
Q

What’re 2 types of studies

A

Qualitative

Quantitative- Observational and Experimental

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13
Q

What are the 2 best methods of obtaining evidence

A

Systematic review of random trials
Then
Randomised control trials

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14
Q

Name 2 Epidemiological Study Design

Compare their sub-studies

A

Analytical:

  • Cohort studies—> Analysis can be rate OR odds ratio
  • Case control study—> Analysis can ONLY be odds ratio

Descriptive:

  • Ecological study—> Unit of analysis is groups
  • Cross sectional study—> Unit of analysis is individuals
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15
Q

Compare Descriptive and Analytical Epidemiology

A

Descriptive: Sampling to infer back to population
Rarely achieve a perfect sample

Analytical: To compare “like for like” samples
Rarely achieve “like for like’ samples

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16
Q

How does an Ecological study work?

How is one conducted

A
  • Count cases by groups
  • Identify groups to study
    Define characteristics to be studied (Exposure and Outcome)

Decide whether analysis involves counting categorical (Nominal/ Ordinal-Order matters-) OR measuring continuous data

Gather data on group level characteristics

17
Q

What are 4 issues with Ecological Studies

A
  • Defining characteristics
  • Variation in measurement
  • Chance (Random Error)
  • Ecological Fallacy (Confounding): Falsely inferring individual-level association from group level association
18
Q

How does a Cross-Sectional Study work?

How is one conducted?

A

Count cases

Who do you want to generalise to- Theoretical Population
What population can you access- Study Population
Who do you want in your study- Sampling Frame
Who is in your study- The Sample

19
Q

What are 3 issues with Cross-Sectional studies

A
  • Chance
  • Responder/ participant bias
  • Sampling bias
20
Q

How is a Case-Control study conducted

A
Find cases who have the outcome 
Find controls (Non-cases) who have the outcome 

Compare levels of exposure between Cases and Controls

21
Q

What are 4 issues with Case-Control studies

A
  • Chance
  • Confounding
  • Selection bias
  • Information bias
22
Q

Compare the 2 types of Cohort Study

A

Concurrent/ Prospective- Collect data at a current point in time
Historical/ Prospective- Go back in time to collect data

23
Q

How is a Cohort study conducted

A

Identify outcome-free individuals
Group individuals according to level of exposure
Compare exposure rates for each group

24
Q

What are 4 issues with a Cohort Study?

A
  • Confounding
  • Chance
  • Information Bias
  • Loss to follow-up (People may drop out of study)