Epidemiology

Code:

CN41006

Acronym:

EPIDEM

Keywords
Classification	Keyword
OFICIAL	Social Science
OFICIAL	Health Sciences

Instance: 2014/2015 - 1S

Active?	Yes
Web Page:	http://moodle.up.pt/course/view.php?id=2901&sesskey=lYqo2Fx9hT&switchrole=5
Course/CS Responsible:	Nutrition Sciences

Cycles of Study/Courses

Acronym	No. of Students	Study Plan	Curricular Years	Credits UCN	Credits ECTS	Contact hours	Total Time
CNUP	92	Plano oficial	4	-	5,5	56	148,5

Teaching language

Portuguese

Objectives

The main objective of Epidemiology, within the context of Nutrition Sciences, is to investigate the contribution of diet and other factors in the disease and its treatment. This is an exciting area of study, because it shed light on potential causes and preventive strategies of the disease. It also allows the quantitative evaluation of clinical practice, which enables the implementation of nutritional treatment based on scientific evidence.

Although the Nutritional Epidemiology is a relatively new branch of Epidemiology, researchers used the basic epidemiological methods in the identification of essential nutrients more than two centuries ago. But only in the last three decades has there been a substantial development of this branch of epidemiology, which arose from the increasing need to respond quantitatively to the relationship between diet and health.

Nutritional Epidemiology uses epidemiological methods to determine the associations between dietary factors and the occurrence of specific diseases. The complex nature of food intake and the variety of exposures, requires special expertise to choose the most appropriate way to assess it. The effects of dietary intake may also be modified or confounded by other exposures, which are related to living habits. The quantification of the independent effect of nutrition and the impact of these factors must be considered, ensuring the quality of information on which Clinic and Public Health decisions are made.

This course is presented as both an objective and scientific method of problem solving and also all the results obtained by applying this method. It is our aim that students acquire knowledge and skills at different levels, that are required to use Epidemiology and Epidemiological thought with proficiency in the workplace. 

Learning outcomes and competences

1. Skills related to general knowledge. 

Knowing the frequency of nutrition related diseases in human populations, identify and interpret the significance of risk factors and to recognize the importance of its prevention, its control and its treatment. 
Identify priority prevention strategies for health promotion. 
Learn to colect and to evaluate the qualitíty of the scientific information in Epidemiology. To use Epidemiology in health care and public health policydevelopment . 

2. Skills related to specific knowledge: identify problems, studies design and research conduction. 

To identify health problems and to formulate hypotheses about the association between diet, nutrition and states of disease and its treatments. 
Learn to choose between the different possibilities in the design of studies. Define a population, select the sampling process and recruitment of participants. Understanding the basic rules in their implementation and acquire basic skills in analysis and interpretation of data. Evaluate the major sources of errors and how to implement strategies in quality control. To able to prepare a draft of a research protocol. Recognize the ethical issues inherent in epidemiological research. 

3. Skills related to data interpretation, information, communication and consultancy. 

Leart to critically interpret data from epidemiologic studies. To critically analyze the scientific press. To be able to prepare a draft of a scientific article. Learn to convey the results to the scientific community, the public and the media. Learn how to make a scientific jugdement in a particular context. 

4. Competencies related to professional conduct. 

Learn to use scientific evidence in making decisions in their professional life. To be able to maintain ethical and responsible professional conduct.

Working method

Presencial

Program

Module 1: Epidemiology and its backgroun in a Nutrition Degree Course.

1.1 Presentation of the Curricular Unit. Objectives and methods.
1.2 Epidemiology. Concept and historical perspective. The emergence of Nutritional Epidemiology and Clinical Epidemiology.

Module 2: Nutritional Epidemiology.

2.1 Descriptive and analytical Epidemiology. Types of observational studies, quasi-experimental and experimental studies. The systematic reviews and meta-analysis.
2.2 The measurement of food consumption in Epidemiology: the nature of variation in food intake, retrospective and prospective methods, the use of biological markers in assessment of nutritional intake, the validity and reproducibility of estimates of intake and the assessment in the distant past, the importance of evaluating total energy intake, its consideration in the analysis of data and the residual method, the use of alternative respondents. The gene nutrient interaction in Nutritional Epidemiology.
2.3 The measures of association.
2.4 The bias, confounding variables and modifiers of effect. Effects and solutions.
2.5 Sampling, a study size and statistical power.
2.6 Ethical issues.
2.7 Design of a study and its conduction.
2.8 Interpretation of the epidemiological investigation. Criteria for causal inference.
2.9 Investigation of an outbreak of food-borne illness.

Module 3: The Clinical Epidemiology.

3.1 The choice and interpretation of diagnostic tests. The sensitivity, specificity, predictive value and likelihood ratios. Screening.
3.2 The prognosis, treatment and decision based on scientific evidence. The effectiveness of intervention.

Module 4. Seminars on the role of epidemiological studies in determining the causal relations between diet and disease and on current priorities and chalanges in epidemiology.
4.1 The epidemiology of disease-related undernutrition;
4.2 The measurement of anthropometric and body composition in epidemiology;
4.3 The nutritional epidemiology of cancer;
4.4 The nutritional epidemiology of cardiovascular diseases; 
4.5 Other topics.

Mandatory literature

Gordis Leon; Epidemiology. ISBN: 978-1-4557-3733-8
Willett Walter; Nutritional epidemiology. ISBN: 978-0-19-975403-8
Fletcher Robert H.; Clinical epidemiology. ISBN: 0-7817-5215-9
International Epidemiological Association; A Dictionary of Epidemiology, Miquel Porta, 2014. ISBN: ISBN: 9780199976737

Complementary Bibliography

Rothman Kenneth J.; Epidemiology. ISBN: 0-19-513554-7
Margetts Barrie 340; Design concepts in nutritional epidemiology. ISBN: 0-19-262739-2

Teaching methods and learning activities

Theorical classes methodologies:

The interactive course will consist of lectures, debates and discussions and pratical work. Students are invited to answer questions and express and justify their opinion. The teaching of this curricular unit is articulated as if it were a "puzzle" composed of several pieces, which are presented so that the final image is well visible even before the end of the school year. Students are asked and encouraged to contribute with their creativity is stimulated.

Laboratory classes methodologies:

1. guided reading, interpretation and discussion of scientific articles, with particular enphasis on actual controversies;
2. small group assignnent: data tabulation, problem solving and data analysis, using data collected by colleagues in Academic Internship, allowing an hands-on experience.
3. Designing questionnaires, planning coding responses, data collection and data computer storage. Results tabulation, categories selection and participants classification;
4. Diet consumption nutritional analysis. Adjustment for total energy intake by the residuals method;

Software

SPSS
Moodle
Microssoft Office

Evaluation Type

Distributed evaluation with final exam

Assessment Components

Designation	Weight (%)
Exame	60,00
Teste	40,00
Total:	100,00

Eligibility for exams

With distributed avaliation (DA) and final examination (FE), it is necessary to obtain the minimum mark of 50% in each. To be admited to exam, students may not miss more than a third of the planned laboratory classes and need to obtain at least 50% of the classification of DA (4 values). Alternatively, there is the possibility of being assessed only by Final Exam (0 to 20), with the condition - the student's presence in 75% of laboratory classes provided.

Calculation formula of final grade

The calculation of the final grade (20 marks) is taken from the mark of Distribution Assessment (8 marks, minimum score of 4) and the Final Exam (12 marks minimum score of 6).


If students choose to be assessed only by FE or do not obtain a minimum grade of 4 values in DA, the final grade is equal to the score obtained in FE.

Examinations or Special Assignments

Distribution Assessment: 1 test, with the mark of 8.

Special assessment (TE, DA, ...)

To pass the curricular unit the attendance of lab classes is mandatory. Alternatively, these students will be able to produce assignments.

Classification improvement

Final exam.

Observations

The contents of the course are on the Moodle platform, accessible to all students of Epidemiology.

The agreed period of service was combined with students at Thurday, 4 to 5 PM, at teacher ofice.