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分析流行病学方法 PowerPoint PPT Presentation


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分析流行病学方法. 海 南 医 学 院 黄海溶. 历史常规资料分析 横断面研究 描述性研究 纵向研究(包括疾病监测、 观察性研究  (产生假设) 随访研究) 生态学研究 病例对照研究 分析性研究 (检验假设) 队列研究

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分析流行病学方法

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case control study



case control study

,




  • risk factor


  • (Exposure)


(association)

ORodds ratio


  • bias

  • ,




+

a

c


+

a

c

+

b

d





(matching)


matching

pair




2

OR


.1

1


2

n>40,1<T<5

n>40,T>5


(3)

OR


OR


OR

OR=1

OR>1 ,

OR<1 ,

OR

0

1


4OR

OROROR

OR=1


  • 1DollHill1950

  • 688 650 1338

  • 21 59 80

  • 709 709 1418


1)2

<0.001,OR


2)OR

MiettinenOR

2.9795%1.834.90


2abcd

2. 1:1

2 11

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OR 95%C.I.=


3

3 93


4.3,95%1.8410.08





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