2口腔流行病学龋病流行病学-武大《预防口腔医学》课件.doc
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1、2口腔流行病学龋病流行病学-武大?预防口腔医学?课件 The Epidemiology of Dental Caries Types of study Descriptive studies cross-sectional longitudinal historical Analytical studies case-control cohort Experimental study Clinical trials Intervention fields trials An Index is a graduated numerical scale with upper and lower li
2、mits with scores in the scale corresponding to specific criteria 指数说明某种现象变动的程度指标作用或 批示作用的标识 用数值级差作标准测量和比拟疾病的扩展范围和严重程度 An Ideal Index 简单 Simplicity 价廉 Acceptability 有效 Validity 可靠 Reliability 敏感 Sensitivity 统计学方法处理 Quantifiability 可逆性指数 reversible 菌斑指数 gingivitis 累积性指数 cumulative DMF dental caries Sc
3、ale for measurement Nominal scaleOrthodontic angles classification Marital status single married divorced windowed Colour of hair red yellow black green Types of Blood O A B AB Ordinal scale plaque index Gingival Index CPI Years of education 0 1-5 6-9 10 Severity of disease mild moderate severity In
4、terval temperature in Celsius temperature 22 and 26 32 and 36 Ratio weight mortality rate DMFT Examine equipment Artificial light Dental mirror CPI probe Oral Health Surveys 4th Edition Code Conditions Primary teeth Permanent teeth Crown Crown Root A 0 0 Sound B 1 1 Decayed C 2 2 Filled with decay D
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- 预防口腔医学 口腔 流行病学 预防 口腔医学 课件
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