Contingency Tables

Home About us Mathematical Epidemiology Rweb EPITools Statistics Notes Web Design Contact us Links

> Home > Statistics Notes > Probability > Contingency Tables

Two by two contingency Tables

It is also useful to consider the concepts of set theory in the context of a two by two contingency table. When you move the mouse over the entry in the table, the corresponding cell in the contingency table will be illuminated. Here, I continue to consider the case of individuals infected with tuberculosis; E denotes extrapulmonary involvement; E^c denotes no extrapulmonary involvement. And here P denotes pulmonary involvement, and P^c denotes no pulmonary involvement.

Empty set	E Extrapulmonary	P Pulmonary	E P Either Extrapulmonary or Pulmonary or Both
E P Both Extrapulmonary and Pulmonary	E^C Not Extrapulmonary	P^C Not Pulmonary	(E P^C) (P E^C) Either but not both
E P^C Extrapulmonary but not pulmonary	P E^C Pulmonary but not extrapulmonary	(E P)^C Not both extrapulmonary and pulmonary	(E P)^C Neither extrapulmonary nor pulmonary
(E P^C)^C Anything other than just extrapulmonary	(P E^C)^C Anything other than just pulmonary	(E P) (E^C P^C) Both or neither	Sample Space Any possibility

Return to statistics page.
Return to probability page.
Return to stochastic seminar.