'Salk vaccine field trial' diaporamas de présentation

An Introduction to Statistical Thinking

An Introduction to Statistical Thinking. January 15, 2014. The Omnipresence of Variability. Individuals vary Repeated measurements on the same individual vary. The Omnipresence of Variability. Individuals vary Repeated measurements on the same individual vary

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Types of Studies and Study Design

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1954 Salk vaccine field trials

1954 Salk vaccine field trials. Biggest public health experiment ever Polio epidemics hit U.S. in 20 th century Struck hardest at children Responsible for 6% of deaths among 5-9 year olds. Salk vaccine field trial. Polio is rare but virus itself is common

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Lecture 4 Outline

Lecture 4 Outline. Chapter 1.3, 1.5 Control in Experimental Design Causal Inference in Observational Studies Summarizing Data Numerical methods Graphical methods. The meaning of the causal inference.

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