Bias Update: S. Bracebridge Sources: T. Grein, M. Valenciano, A. Bosman EPIET Introductory Course, 2011 Lazareto, Menorca, Spain.
Cancer epidemiology Epidemiology & public health – understanding and control of disease at population level The scientific basis – knowledge through probability.
Clinical Epidemiology – the basics. What do the terms relative risk and absolute risk mean? What are the advantages and disadvantages of each? A new screening.
Developing a Child Cohort Research Strategy for Europe Is it the healthiest women who drink alcohol during pregnancy? A CHICOS.
Correlation vs. Causation. In a Gallup poll, surveyors asked, “Do you believe correlation implies causation?’” 64% of American’s answered “Yes”. 38% replied.
Epidemiology I. What is epidemiology? What common measures are used in the field of epidemiology? What are the subject areas studied by epidemiologists?
Understanding P-values and Confidence Intervals Thomas B. Newman, MD, MPH 20 Nov 08.
Peripheral Chemoreceptor Responsiveness and Hypoxic Pulmonary Vasoconstriction Tyler J. Albert, M.D. Senior Medical Resident Chief of Medicine Rounds November.
Confounding and Interaction: Part II Methods to reduce confounding –during study design: »Randomization »Restriction »Matching –during study analysis:
The Psychologist as Detective, 4e by Smith/Davis © 2007 Pearson Education Chapter Six: The Basics of Experimentation I: Variables and Control Chapter Six:
Third Training Module, EpiSouth: Stratification, 15 th to 19 th June 2009 1/50 Stratification: Confounding, Effect modification Third training Module EpiSouth.
Variability & Bias Yulia Sofiatin Department of Epidemiology and Biostatistics CRP I.