Exposures & Outcomes 2 A major goal of epi research is causality Epi studies measure 3 things: exposures, confounders & outcomes Once quantified, the association between exposure and outcome is the central focus There are many ways of evaluating the association … Molecules What/why? • What is the research question? TYPES OF EPIDEMIOLOGICAL DESIGNS R.Malarvizhi 2. epidemiological study designs Irene Petersen,1 ,2 Ian Douglas,3 Heather Whitaker 4 The self controlled case series (SCCS) method is an epidemiological study design for which individuals act as their own control—ie, comparisons are made within individuals. To prepare, review the Learning Resources about epidemiologic study designs. Timeframe of Studies Prospective Study looks forward, looks to the future, examines future events, follows a condition, concern or disease into the future time Study begins here. The more appropriate the study design, the more convin-cing the evidence that will be produced. Especially for AYUSH reseachers There are two broad types of epidemiological studies: 1. Questions to ask yourself • What is the population of interest? .A presentation on epidemiological study designs.Epidemiological study designs 1. In an experimental study design, researchers assign patients to intervention and control/comparison groups in an attempt to isolate the effects of the intervention. Just as the key elements and determinants of outcomes of war are fixed even before it is fought (i.e., at its planning stages), the success of a study is also largely determined at its initial planning stage. Epidemiology Definition: By John M. Last in 1988 as, “ The study of the distribution and determinants of health –related states or events in specified populations, and the application of this study to the control of health problems.” 3. The four main stud designs of epidemniology - cross sectional, cohort, case control and RCT are explained using a single example. Incidence studies ideally measure exposures, confounders and outcome times of all population members. Overview of Epidemiological Study Designs Madhukar Pai, MD, PhD McGill University madhukar.pai@mcgill.ca. Cross-sectional, cohort and case control studies. Once this distinction has been drawn, then the different epidemiological study designs differ primarily in the manner in which information is drawn from the source population and risk period. Overview • Study Designs – Descriptive – Analytical •Observational •Experimental • Survey Development • EHR Data . Epidemiological study design Paul Pharoah Department of Public Health and Primary Care . Epidemiological Study Designs Dr. M.M. Retrospective Conducted backward in time: past events. It generally describes an injury or injuries to one or two individuals that have been identified in a medical setting. STUDY DESIGNS - An Overview Dr Lipilekha Patnaik professor, Community Medicine Institute of Medical Sciences & SUM Hospital, Siksha ‘O’ Anusandhan deemed to be University Bhubaneswar, ODISHA, INDIA E mail– drlipilekha@yahoo.co.in 1 Acohort*study!isaformoflongitudinalobservationalstudy.Itbeginswithagroupofpeople! For this Discussion, you will identify and design epidemiological research studies. Prospective Conducted forward in time: into the future 2. Based on media descriptions of the research, however, facts about the issue under study may appear less than obvious. In this course, you will learn about the main epidemiological study designs, including cross-sectional and ecological studies, case-control and cohort studies, as well as the more complex nested case-control and case-cohort designs. Epidemiological Study Designs -With One Example - Free download as Powerpoint Presentation (.ppt), PDF File (.pdf), Text File (.txt) or view presentation slides online. Epidemiological Study DesignsUnderstanding the differences among the types of epidemiological study designs is important for translating the results to public health practice. Our knowledge of molecular biology, cellular biology, physiology and pathology is a fundamental part of clinical medicine. Based on direction of follow-up/data collection: 1. through contaminated water, Snow’s efforts helped lay the foundation for modern epidemiological studies, which collect data and test hypotheses relative to a vast range of factors that affect diseases—from genetic variability to socioeconomic status—with the ultimate goal of improving public health. 2. Confounders & effect modifiers (covariates) 3 Exposures & Outcomes A major goal of epi research is to explain patterns of disease occurrence and causation (etiology) Epi measurements are aimed at quantifying 3 things: exposures, … In epidemiological study design, we study and discover the cause of a disease or other health outcomes. Study Designs in Epidemiologic Research Thomas Songer, PhD Modified by Supercourse team * Descriptive study designs include case reports, case series, incidence studies, and ecologic studies. Causation support diagnosis of disease such as by Study designs, Epidemiological study design, Types of studies 1. Epidemiological study designs- Examples of medical sciences Maryam Askari 1*, Hassan ali Mahmoudi Kohani 1, Nasim Namiranian 1 Email: Dear editor pidemiology is the study and analysis of distribution and determinants of health-related conditions or events including diseases, and the practice of this study to the control of diseases and other health problems (1). Media reports may sensationalize results and overstate outcomes. Table 1 lists epidemiological study designs and specific goals these can help achieve. Mweu, MBChB Level V Epidemiology, 11 October, 2019 UoN School of Public View Study-Designs-ppt.pdf from NURSING 104 at University of Nairobi. !3! 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