全英文《流行病学（EPIDEMIOLOGY）》(南京医科大学) 中国大学mooc慕课答案2024版 m61091

Chapter 1 Introduction to Epidemiology Test

1、 What is the definition of epidemiology

答案: Studying the distribution of diseases and health status in the population and relevant factors, as well as formulating and evaluating strategies and measures to prevent, control and eliminate diseases and promote health.

2、 Which one is true about epidemiology

答案: Studying the distribution of disease and health status in population and relevant factors.

3、 Which one is not the characteristics of epidemiology

答案: Treatment only

4、 What is the fundamental difference between observational and experimental methods in epidemiological studies

答案: There is an intervention or not.

5、 What is the difference between epidemiology and clinical medicine

答案: Studying disease at the population level.

作业Chapter 1 Introduction to Epidemiology ASSAY

1、 Please describe the major function of Epidemiology
评分规则: list five point of the application of epidemiology

Chapter 2 Measures of diseases frequency （疾病的测量） Test

1、 What is the study to compare the history of oral contraceptives between patients with cervical carcinoma and other patients hospitalized at the same time in order to explore the relationship between oral contraceptives and cervical carcinoma

答案: Case-control study

2、 What is the numerator of incidence in an exposed population during a certain period

答案: New cases

3、 The definition of prevalence is

答案: The number of new and old cases of a disease / the average number of population at the same time

4、 A approach to comprehensively describe the distributions of time, population, and region for a disease is

答案: Migrant epidemiology

5、 A doctor examined the HBsAg status among 2,000 people and found 300 were positive.The most appropriate indicator for the survey is

答案: Infection rate

作业Chapter 2 Measures of diseases frequency （疾病的测量） Assay

1、 Consider a class with 100 enrolled students. None of the students were ill at the begining of the school year. On September 30, a total of five studens reported having gastroenteritis. All continued to be ill on October 1, but all five recovered within 3 days. On October 14, another three students developed gastroenteritis. ll of these students continued to be ill on October 15, but all three recovered 5 days later. In this example , assume that a person cannot get gastroenteritis more than once.A. Calculate the prevalence of gastroenteritis in the class on October 1B. Calculate the prevalence of gastroenteritis in the class on October 30.C. Calculate the cumulative incidence of gastroenteritis in the class during the month of October.
评分规则: 1. 5/100
2. 0/100
3. 3/(100-5)

Chapter 3 Descriptive Studies Test

1、 Which of the following characteristics do descriptive studies have

答案: Describe the characteristics of the disease distribution and provide a clue to the cause of the disease

2、 What are the advantages of the prevalence survey study

答案: A variety of factors can be measured in an investigation.

3、 Which is the method of analyzing and researching in groups without individual data

答案: Ecological study

4、 Which is the characteristics of the sampling survey that are not included

答案: Small sample size

5、 Which is the way to early detection and treatment of patients

答案: Census

作业Chapter 3 Descriptive Studies Assay

1、 In order to ensure that the sample can reflect the overall situation, what should be considered in the analysis
评分规则: The variation of the subjects;
Whether the sample size is large enough;
Whether the sampling method is feasible;
Whether the sample is representative.

作业Chapter 4 Cohort Studies Assay

1、 Describe the factors influencing the sample size.
评分规则: The incidence of the disease studied in the control population
The difference in incidence between the exposed group and the control group
Significance level: α
Power: 1-β

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