????????????? (EPIDEMIOLOGY)

1
?????????????(EPIDEMIOLOGY)

• ??????? ???????

2
??????????????????????????

• ????????????????????????????????
• ????????????????????? (Observational)
• ??????????? ???????/???????
• ??????????????/???????

3
???????????????????????

• ??????????????????????
• ???????? (?????)
• ???????????????????
• ??????????????????????????

4
????????????? ???? ?????????? ?

• ???????? (Epidemic disease)
• ????????? (Communicable disease)
• ???????????? (Non-communicable disease)
• ??????????? (Non-infectious disease)
• ??????????? (Chronic disease)
• ???????????????????? (Occupational disease)
• ????????????????? (Environmental disease)

5
EPIDEMIOLOGY

• EPI on, upon
• DEMOS people, population
• LOGOS knowledge, study
• doctrine, discourse
• science

6
Evolution of Definition

• The science or doctrine of epidemics
• (New standard Dictionary of English Language)
• The science of infective diseases, their prime
  causes, propagation and prevention
• (Stallybrass)
• The study of conditions known or reasonably
  supposed to influence the prevalence of disease
• (Lumsden)

7
Modern Meaning

• Epidemiology is the science which concerns itself
  with the natural history of disease as it is
  expressed in groups of persons related by some
  common factors of age, sex, race, location or
  occupation as distinct from the development of
  disease in an individual (American
  Epidemiological Society)
• Epidemiology is the study of patterns of disease
  and the factors that cause disease in man (CDC)
• Epidemiology is the study of the distribution and
  determinants of disease frequency in man
  (MacMahon Pugh)

8
Epidemiology

• Epidemiology is the study of the occurrence,
  distribution, determinants (which are dynamic) of
  health problems and disease in human populations
  or communities

9
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10
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11
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  ?
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12
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• ?????????????
• ??????????????????????????????

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??????????????????????????????? (Web of Practical
Epidemiology)
????????????????????????? (Epidemiology
surveillance)
?????? (Data)
?????? (Data presentation)
??????????????? (Data analysis)
?????? (Report)
????????????????????????? (Priority setting)
??? - ??????????? - ?????????????? ???
??????? (Occurrence)
What When Where Who
???????? (Data ana. Presen.)
??????? ??????????
?????????? ??????????(Descriptive epidemiology)
?????????????????????? (Evaluation)
?????????? (Epidemiology)
???? (Time) ??????? (Place) ????? (Person)
????????? (Distribution)
?????????????????????? (Investigation)
????????? (Determinace)
A ??????????? H ??????????? E ???????????
Why How
???????????? (Record)
?????????????????????
???????????????????????/????? (Analytical/Experime
ntal epidemiology)
??????????? (Monitoring)
??????????????????? (Implementation)
???????????????? (Planning)
??????????? (Body of knowledge)
????????????? (Literature review)
?????????????? (Problem analysis)
14
?????????????????????

• ?????
• ??????
• ?????
• ????
• ??????? 4

15
???????????????????

• ?????????? (Agent) A
• ?? (Host) H
• ??????????? (Environment) E

16
???????????
??????????
??
???????????
17
???????????? A, H, E Dr. John Gordon
?????
A
H
E
18
???????????? A, H, E Dr. John Gordon
H
A
E
Agent ???????
19
???????????? A, H, E Dr. John Gordon
A
H
E
Host ???????
20
???????????? A, H, E Dr. John Gordon
H
A
E
Environment ???????
21
???????????? A, H, E Dr. John Gordon
A
H
E
Environment ???????
22
?????????????????????

• ?? 2 ????
• ???????????????
• ???????????
• - ???????????????
• - ?????????????? (Mild, Moderate, Severe)
• - ???????????????????

23
?????????????????

• Cure (??????)
• Chronic (????????)
• Relapse (?????????)
• Disability Defect (???????????????
• ?????)
• Death (?????????)

24
????????????????????????????????
A ???????? H ???? ??? ?????????
????? ... E ??????? ???????? ?????
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???????????????????????????
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25
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A ?????????? H ?????????? ???? ??? E
?????? ??? (??????)
???? ???
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26
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A ???????? H ???? ??? ??????????
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