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Class Notes for Community Health and Epidemiology at Queen's University

EPID 301 Lecture Notes - Lecture 9: Confounding, Test Screening, Recall Bias

EPID 301 LECTURE 9: Other Study Designs [Other Study Designs] 1) Retrospective Cohort Unit of Analysis: Person Basis of selection: exposure Estimate: risk ratio Direction: looking back in time Pros Cons Great for occupatio...

Community Health and Epidemiology
EPID 301
Helene Ouellette-Kuntz
EPID 301 Lecture Notes - Lecture 8: Caffeine, Confidence Interval, Dependent And Independent Variables

EPID 301 Lecture 8 1) Stratified analysis to distinguish EM from confounding After stratification, if there is effect modification, the stratum specific (adjusted) estimates will be different from each another. Tests for ...

Community Health and Epidemiology
EPID 301
Helene Ouellette-Kuntz
EPID 301 Lecture Notes - Lecture 7: Relative Risk, Statistical Model, Odds Ratio

EPID 301 Lecture 7 1) Strengths and Weaknesses of Crosssectional Studies Strengths Weaknesses Less costly and quicker than other Identifying prevalent rather than incident designs cases; tend to over represent disease of l...

Community Health and Epidemiology
EPID 301
Helene Ouellette-Kuntz
EPID 301 Lecture Notes - Lecture 6: Confounding, Rare Disease, Osteoporosis

EPID 301 LECTURE 6 1) Categories of Epidemiologic Studies Epidemiologic studies can be 1) observational or 2) experimental 2) Exposures and Outcomes exposure: any factor that might influence health, positively or negativ...

Community Health and Epidemiology
EPID 301
Helene Ouellette-Kuntz
EPID 301 Lecture Notes - Lecture 5: Standardized Mortality Ratio, Stratified Sampling, Confounding

EPID 301 LECTURE 5 {Selection Error in Descriptive Studies} 1) Sources of Error Type of error Sources of error Type of bias Random error Chance NA Systematic Error Measurement Flaws in study design (flawed Misclassificatio...

Community Health and Epidemiology
EPID 301
Helene Ouellette-Kuntz
EPID 301 Lecture Notes - Lecture 4: Frequency Distribution, Pain Scale, Statistical Hypothesis Testing

find more resources at oneclass.com EPID 301 Lecture 4 1) What is measurement error? - The diference between a measured value and its true value - It can be random (due to sampling variability) or systematic (AKA bias) - H...

Community Health and Epidemiology
EPID 301
Helene Ouellette-Kuntz
EPID 301 Lecture Notes - Lecture 3: Sampling Frame, Simple Random Sample, Standard Deviation

EPID 301 LECTURE 3 **Important to know the how to get the Total person time at risk Q1. What is the incidence densityrate? (Total is 83 months textbook error= 82!) new cases or events =3 (person 7 counts for 2 events) Inc...

Community Health and Epidemiology
EPID 301
Helene Ouellette-Kuntz
EPID 301 Lecture Notes - Lecture 2: Prostate Cancer, Osteoarthritis, Heart Cancer

EPID 301 Lecture 2 Reported as proportion (amount of disease conditions, helping in a given population) Prevalence is reported rarely than the prevalence odds Basic epidemiologic parameters (characteristics of a populati...

Community Health and Epidemiology
EPID 301
Helene Ouellette-Kuntz
EPID 301 Lecture Notes - Lecture 1: Sampling Bias, Prevalence, Observational Error

EPID 301 LECTURE 1 What is Epidemiology? Epid: upon Demi: people ology: study Definition: study of distribution, determinants, and deterrents of health related problems (diseasemorbidity and mortality) in populations Di...

Community Health and Epidemiology
EPID 301
Helene Ouellette-Kuntz
EPID 301 Lecture Notes - Lecture 9: Influenza Vaccine, Disease Surveillance, Big Data
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EPID 301 Week 9 Lecture November 07, 2017 EPID-Watch PCI heart surgery application may have a placebo effect instead of a practical effect o PCI = Pulmonary Coronary Inte...

Community Health and Epidemiology
EPID 301
Dr.Duncan Hunter
EPID 301 Lecture Notes - Lecture 7: Confounding, External Validity, Internal Validity
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EPID 301 Week 7 Chapters 9, 10 Chapter 9 Reading between the lines: reading and writing epidemiological papers Overall goal is to maximize the pop...

Community Health and Epidemiology
EPID 301
Dr.Duncan Hunter
EPID 301 Lecture Notes - Lecture 4: Statistical Significance, Point Estimation, 2017 Las Vegas Shooting
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EPID 301 Week 4 Lecture – October 3, 2017 • Chance • Bias • Confounding EPID-Watch • Sleep Study o Measured amount of sleep and school starting time o Looked...

Community Health and Epidemiology
EPID 301
Dr.Duncan Hunter
EPID 301 Lecture Notes - Lecture 2: Birth Weight, Health Professional
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EPID 301 Week 2 Lecture 2 – September 19, 2017 How to measure users and outcome? • Outcome can be something such as dying from heart retention o Factor of cause of death • Measu...

Community Health and Epidemiology
EPID 301
Dr.Hunt
EPID 301 Lecture Notes - Lecture 3: Relative Risk, Cohort Study, Attributable Risk
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EPID 301 Week 3 Lecture – September 26, 2017 • Midterm exam ~ 3 weeks from now (more information next week) • Know how to identify the type of study, risk factors involved, and type of ...

Community Health and Epidemiology
EPID 301
Dr.Hunt
EPID 301 Lecture Notes - Lecture 1: Sedentary Lifestyle, Accelerometer, Cholera
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EPID 301 Week 1 Lecture 1 – September 12, 2017 • John Snow, figured out Cholera o Epidemiologist o Always drank boiled water and was a vegetarian ▪ Stroke at age 45 o One of the very first...

Community Health and Epidemiology
EPID 301
Dr.Hunt

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