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流行病学-流行病学课件.ppt

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流行病学-流行病学课件.ppt

上传人:小马康康 2017/9/25 文件大小:1.55 MB

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流行病学-流行病学课件.ppt

文档介绍

文档介绍:筛检
Screening
Stage of
susceptibility
Stage of
Subclinical Disease
Stage of
Clinical Disease
Stage of Recovery,
Disability, or Death
Exposure
Pathological
Changes
Onset of
Symptoms
Usual Time
of Diagnosis
疾病自然史(Natural History of Disease)
目录
概述
筛检试验的评价
筛检效果的评价
Introduction
Evaluation of screening test
Evaluation of effectiveness
Outline
筛检是运用快速、简便的试验、检查或其他方法,将健康人群中那些可能有病或缺陷,但表面健康的人、同那些可能无病者鉴别开来
Screening is defined as the use of quick and simple testing procedures to identify and separate persons who are apparently well, but who may be at risk of a disease, from those who probably do not have the disease.
第一节概述
Introduction
Apparently Well Population to be Tested
Screening Test
Diagnostic Test
Disease or Risk
Factor Present
Disease or Risk
Factor Absent
Negatives
(Normal) (Persons presumed
to be free of disease)
Negative on screening
Positive on screen, no disease
Positive on screen, disease present
Positives
(abnormal)
presumed to
have disease
Treatment
Intervention
筛检试验流程图 Flow diagram of screening test
筛查方法的评价与选择程序
Procedures of evaluation and selection for screening test
金标准
(gold standard)
目标人群
Target
population
病人
Patient
非病人
Non-patient
待评价筛查方法Screening to be evaluated
评价指标
Evaluation indicator
+
-
+
-
筛检试验
Screening test
识别健康人群中未被发现的某病患者或可疑患者,或高危个体
Screening is the detection of patients, suspected patient and high risk of the disease in healthy population
筛检试验
Screening test
问卷、常规体格检查、物理学检查、实验室检验、分子生物学技术
Questionnaire, routine physical examination, physical examination, laboratory tests, molecular biology techniques
根据所用的筛检方法的数
量多少
单项筛检
多项筛选
筛检的分类
Categories of screening
Based on the on the quantity of screening methods
Single screening
Multiple screening
根据筛检对象的范围不同
人群筛检
目标筛检
筛检的分类
Categories of screening
Based on the scope of
screening subjects
Mass screening
Targeted screening