Subscribe Bookmark RSS Feed



May 28, 2014

Salk Vaccine Case Study

The Salk Vaccine case study and data.


Download the case study
Download the data

Relative Risk:

Using data from a 1950’s study, determine whether the polio vaccine was effective in a cohort study, and, if it was, quantify the degree of effectiveness.  Key ideas: Relative risk, observational study, cohort study, randomized experiments.

JMP features demonstrated:

Analyze > Distribution

Statistical/graphical tools used:

Bar charts, two-sample proportions test, relative risk, two-sided Pearson and likelihood ratio tests, Fisher's exact test, and the Gamma measure of association.


Statistics case studies provided by Dewayne Derryberry of the Math Department at Idaho State University.