University of Pennsylvania Graduate Program in Public Health MPH Degree Program Course Syllabus – Fall 2010 Title: PUBH 501 - Introduction to Biostatistics Course Units: 1.0 c.u., Contact Hours: 42 hours Course Description: This course is designed to provide a broad overview of biostatistics methods as well as applications commonly used for public health research. Topics covered include measurement and categorizing variables, use and misuse of descriptive statistics, testing hypotheses, and applying commonly used statistical tests. An emphasis will be placed on the practical application of data to address public health issues, rather than theoretical and mathematical development. Students will learn how to choose and apply statistical tools to data sources, when and how statistical tools can be used to analyze data, and how to interpret others’ quantitative studies. Students will gain experience using online datasets and the STATA statistical software package. Placement / Room Assignment: Wednesday, 5:00-8:00 PM Lecture & Discussion 1413 Blockley Hall Course Director: Jeane Ann Grisso, MD, M.Sc. Professor of Public Health, Medicine, and Nursing jgrisso@nursing.upenn.edu Office Hours: By Appointment. Teaching Assistant: Steffanie Halberstadt Biostatistics Doctoral Student halberst@mail.med.upenn.edu Office Hours: By Appointment. Pre-requisites: Enrollment in a master’s or doctoral program. Undergraduates and nonmatriculated students need permission of the instructor. Course Overview: This course aims to provide the student with basic skills in biostatistics and common applications of biostatistics in public health research. Co-requisites: None. Course Objectives: Upon completion of this course, students will be able to: Explain, calculate, and interpret descriptive statistics including scales of measurement, frequency distributions, measures of central tendency, measures of dispersion, standard scores, and the normal curve. Read, construct, and analyze charts, graphs, and contingency tables. Understand the basic concepts of inferential statistics including probability, confidence intervals, and hypothesis testing. Know when and how to apply common parametric statistical tests. Develop basic skills in critical review of the public health literature. Gain experience using computer technology in the application of statistical procedures. Develop a proposed research project including a plan for biostatistical analysis. Core Competencies: 1. Select and define variables relevant to defining public health problems. 2. Recognize how data illuminate ethical, political, scientific, economic and overall public health issues. 3. Collect, summarize, interpret and communicate information relevant to a population health issue. Teaching Methods: Lecture and discussion groups. Evaluation Methods: 50% 30% 20% Exams Group Project and Teaching Presentations Class Participation MIDTERM AND FINAL EXAM - 25% each, total 50% There will be a midterm exam in class on October 20th. The final will be a “take home” exam and will be given out around December Dec. 15th. The two exams will count a total of 50% of the grade. GROUP PROJECT AND TEACHING PRESENTATIONS - 30% Each group will organize teaching presentations on one or two different statistical tests. Each group will also develop a proposal for a group project and present their proposed project to the class at the end of the semester. CLASS PARTICIPATION - 20% Class attendance, participation, and homework will count for the remaining 20% of the grade. Class Participation: Students are expected to come to class on time prepared with comments and questions from their assigned readings and exercises. They are also expected to participate actively in discussions and work in their groups to organize a teaching session and develop a proposed project. Assigned Readings: Statistics: A tool for social research, Joseph F. Healey, Eighth edition This text will be supplemented with hand outs. Academic Integrity: Students are expected to adhere to the University’s Code of Academic Integrity. Care should be taken to avoid academic integrity violations, including: plagiarism, fabrication of information, and multiple submissions. Students who engage in any of these actions will be referred to the Office of Academic Integrity, which investigates and decides on sanctions in cases of academic dishonesty. See link for more information: http://www.upenn.edu/academicintegrity/index.html MPH Academic Standing Policy/Academic Probation: According to University policy, a graduate student must maintain a ‘B’ average or better to be considered in good academic standing. A student who does not meet the University policy of a ‘B’ /3.0 average will be reviewed by the MPH Program Director, the Associate Director and the Academic Progressions Committee. A student may be put on academic probation for a period of 1 semester to improve his/her overall average may be put on academic probation for a period of 1 semester to improve his/her overall average. Any course in which the student receives a grade below a B- will not be applied toward the Master of Public Health degree. The record of any student who receives an unsatisfactory grade (less than a ‘B-‘) in a course or who does not meet the University policy of a ‘B’ /3.0 average will be reviewed by the MPH Program Director, the Associate Director and the Academic Progressions Committee. A student may be put on academic probation for a period of 1 semester to improve his/her overall average Students may continue to take other courses during the probation period and the student must make arrangements with the course director to remediate any grades lower than a B-. These arrangements must be approved by the MPH Program Director with input from the Academic Progressions Committee as needed. Any student who is on academic probation for a period greater than 1 semester will be referred to the Academic Progressions Committee for review and recommendation. This committee is authorized to dismiss the student or allow the student to remain in the program on a probationary basis. A return to good academic standing is contingent on receiving an acceptable grade (B or higher) in all remaining courses. The MPH grading policy is at the discretion of the individual course instructors. Please find below the generally used grading scale for the MPH Program. A+ 97-100 B+ 87-89 C+ 77-79 A 93-96 B 83-86 C 73-76 A- 90-92 B- 80-82 C- 70-72 F Please note that an A+ carries the same weight (4.0) as an A. 0-69 Incomplete Grade: It is expected that a matriculated Master of Public Health student shall complete the work of a course during the semester in which that course is taken. A student who fails to complete a course within the prescribed period shall receive at the instructor’s discretion either a grade of I (incomplete) or F (failure). If the incomplete is given, the instructor may permit an extension of time up to one year for the completion of the course. In such cases, any course which is still incomplete after one calendar year from its official ending must remain as incomplete on the student’s record and shall not be credited toward the MPH degree. Students who receive two or more incompletes within a semester may not register for the subsequent semester(s) without the permission of the Department. For additional information on academic policies, please refer to the corresponding sections in the Student Handbook. Course Outline / Assignments: Class 1 Date 9/15 2 3 4 5 9/22 9/29 10/6 10/13 6 10/20 Class Topics Intro to class and biostatistics Descriptive statistics Rates Ratios Percentages Graphs & Charts Assignments Healey (Chapters 1 & 2) Measures of Central Tendency Healey (Chapters 3&4) Mean Median Mode Skew Measures of Dispersion Range Standard deviation Variance The Normal Curve Healey (Chapters 5&6) The concept Z-statistic Probabilities & areas under the curve Inferential Statistics Random sample Standard error of the mean Stratified sample Cluster sample NO CLASS - DR. GRISSO AWAY Confidence Level Healey (Chapters 7&8) Alpha error Bias Hypothesis Testing Null Hypothesis:Alternative Hypothesis Statistical significance One-tailed, two-tailed Sample Size: Type 1 error, Type 2 error, Power Hand out Hypothesis testing : Student’s t-test Healey (Chapter 9) 7 10/27 MIDTERM 8 11/3 Analysis of Variance Healey (Chapter 10) 9 11/10 Chi Square Test Linear Regression Healey (Chapter 11) Healey Chapter 15) 10 11/17 Multivariate Regression Odds Ratios Healey (Chapters 16, 17) Hand out 11 11/24 Logistic Regression Survival Analysis Hand out 12 13 12/1 12/8 Critical review of the literature NO CLASS - THANKSGIVING Presentations 14 12/15 Presentations & Take Home Final Exam Hand out