Cohort study methods | Cohort studies
A cohort study is a particular form of longitudinal study that samples a cohort (a group of people who share a defining characteristic, typically those who experienced a common event in a selected period, such as birth or graduation), performing a cross-section at intervals through time. It is a type of panel study where the individuals in the panel share a common characteristic. Cohort studies represent one of the fundamental designs of epidemiology which are used in research in the fields of medicine, pharmacy, nursing, psychology, social science, and in any field reliant on 'difficult to reach' answers that are based on evidence (statistics). In medicine for instance, while clinical trials are used primarily for assessing the safety of newly developed pharmaceuticals before they are approved for sale, epidemiological analysis on how risk factors affect the incidence of diseases is often used to identify the causes of diseases in the first place, and to help provide pre-clinical justification for the plausibility of protective factors (treatments). (Wikipedia).
Covariance (1 of 17) What is Covariance? in Relation to Variance and Correlation
Visit http://ilectureonline.com for more math and science lectures! To donate:a http://www.ilectureonline.com/donate https://www.patreon.com/user?u=3236071 We will learn the difference between the variance and the covariance. A variance (s^2) is a measure of how spread out the numbers of
From playlist COVARIANCE AND VARIANCE
Covariance (14 of 17) Covariance Matrix "Normalized" - Correlation Coefficient
Visit http://ilectureonline.com for more math and science lectures! To donate:a http://www.ilectureonline.com/donate https://www.patreon.com/user?u=3236071 We will find the “normalized” matrix (or the correlation coefficients) from the covariance matrix from the previous video using 3 sa
From playlist COVARIANCE AND VARIANCE
Covariance (8 of 17) What is the Correlation Coefficient?
Visit http://ilectureonline.com for more math and science lectures! To donate:a http://www.ilectureonline.com/donate https://www.patreon.com/user?u=3236071 We will learn what is and how to find the correlation coefficient of 2 data sets and see how it corresponds to the graph of the data
From playlist COVARIANCE AND VARIANCE
From playlist Courses and Series
http://www.teachastronomy.com/ Cosmology is the study of the universe, its history, and everything in it. It comes from the Greek root of the word cosmos for order and harmony which reflected the Greek belief that the universe was a harmonious entity where everything worked in concert to
From playlist 22. The Big Bang, Inflation, and General Cosmology
Covariance (3 of 17) Population vs Sample Variance
Visit http://ilectureonline.com for more math and science lectures! To donate:a http://www.ilectureonline.com/donate https://www.patreon.com/user?u=3236071 We will learn the difference and calculate the variance of a population and the variance of a sample of a population. Next video in
From playlist COVARIANCE AND VARIANCE
RELATIONSHIPS Between Variables: Standardized Covariance (7-1)
Correlation is a way of measuring the extent to which two variables are related. The term correlation is synonymous with “relationship.” Variables are related when changes in one variable are consistently associated with changes in another variable. Dr. Daniel reviews Variance, Covariance,
From playlist Correlation And Regression in Statistics (WK 07 - QBA 237)
This educational video delves into how you quantify a linear statistical relationship between two variables using covariance! #statistics #probability #SoME2 This video gives a visual and intuitive introduction to the covariance, one of the ways we measure a linear statistical relation
From playlist Summer of Math Exposition 2 videos
Covariance (7 of 17) Example of the Covariance Matrix - EX 2
Visit http://ilectureonline.com for more math and science lectures! To donate:a http://www.ilectureonline.com/donate https://www.patreon.com/user?u=3236071 We will find the covariance matrix of 2 data sets. Example 2 Next video in this series can be seen at: https://youtu.be/1_QWGUM_31M
From playlist COVARIANCE AND VARIANCE
From playlist Stanford Population Health Sciences
Yale AIDS Colloquium Series - Robert Dubrow
"Cancer Risk and Prevention in Persons Living with HIV" The burden of cancer among persons living with HIV/AIDS is substantial due to both impaired immune function and high prevalence of non-HIV cancer risk factors, such as smoking and oncogenic virus infections. Consequently, the two pi
From playlist Center for Interdisciplinary Research on AIDS
Maintaining Chromosome Ends: Basic Science to Human Health
Elizabeth H.Blackburn, PhD, delivers a talk on maintaining chromosome ends, one of a series of lectures from The Yale School of Medicine Bicentennial Symposium, "Biomedicine in the New Century," which took place over April 28--29, 2011.
From playlist The Yale School of Medicine Bicentennial Symposium
Yale AIDS Colloquium Series (YACS) - Pamina Gorbach
Presented by the Center for Interdisciplinary Research on AIDS at Yale University, the Yale AIDS Colloquium Series (YACS) is an interdisciplinary academic forum for discussion of HIV/AIDS-related research and policy.
From playlist Center for Interdisciplinary Research on AIDS
Kathy Hudson, National Institutes of Health - Stanford Medicine Big Data | Precision Health 2016
Bringing together thought leaders in large-scale data analysis and technology to transform the way we diagnose, treat and prevent disease. Visit our website at http://bigdata.stanford.edu/.
From playlist Big Data in Biomedicine: Enabling Precision Health Conference 2016
Nicola Armstrong - Genome-Wide Association Studies and beyond
Associate Professor Nicola Armstrong (Murdoch University) presents “Genome-Wide Association Studies and beyond”, 22 October 2020 (seminar organised by ANU).
From playlist Statistics Across Campuses
Ruth Travis, University of Oxford - Stanford Big Data 2015
Bringing together thought leaders in large-scale data analysis and technology to transform the way we diagnose, treat and prevent disease. Visit our website at http://bigdata.stanford.edu/.
From playlist Big Data in Biomedicine Conference 2015
Covariance (13 of 17) Covariance Matrix using Sample Data
Visit http://ilectureonline.com for more math and science lectures! To donate:a http://www.ilectureonline.com/donate https://www.patreon.com/user?u=3236071 We will find the covariance matrix using 3 sample data sets given in a matrix format. Next video in this series can be seen at: htt
From playlist COVARIANCE AND VARIANCE
NDD#11 Incidence Of Environmental Disease
HSC Biology Module 8 Non-infectious Disease and Disorders Incidence of Environmental Disease Smoking and Lung Cancer
From playlist Y12 Bio Mod 8 Non-infectious Disease and Disorders