Use R with proptrendtest and glm A score was derived from lo

Use R with prop.trend.test and glm

A score was derived from looking at how the wall of the left ventricle moved while the heart was beating (details in CASS [1981]). A score of 5 was normal; the larger the score, the worse the motion of the left ventricular wall looked. The relationship to operative mortality is given here Operative Mortality Yes %operative mortality Wall Motion Score 5-78-11 12-15 16-19 20 32 Usual = 28.32 p= 1.1E-5 36 3664 1605 746 2.2 10 185 2 20 5.19.1 65 ity1.17 1.7 What do you conclude about the relationship? That is, if you were writing a paragraph to describe this finding in a medical journal, what would you say?

Solution