The table below summarizes results from an experiment in which subjects were classified as diabetic or nondiabetic and then given a treatment. After the treatment, they were again classified as diabetic or
Nondiabetic. Which combinations of before treatment/after treatment categories will yield discordant pairs?

A) Only nondiabetic/nondiabetic
B) diabetic/nondiabetic and nondiabetic/diabetic
C) nondiabetic/nondiabetic and diabetic/diabetic
D) Only diabetic/nondiabetic

Question

The table below summarizes results from an experiment in which subjects were classified as diabetic or nondiabetic and then given a treatment. After the treatment, they were again classified as diabetic or
Nondiabetic. Which combinations of before treatment/after treatment categories will yield discordant pairs?

A) Only nondiabetic/nondiabetic 
B) diabetic/nondiabetic and nondiabetic/diabetic 
C) nondiabetic/nondiabetic and diabetic/diabetic 
D) Only diabetic/nondiabetic

Quizplus · Accepted Answer

Discordant pairs occur when the before and after treatment categories do not match. Therefore, the combinations of diabetic/nondiabetic and nondiabetic/diabetic will yield discordant pairs. The other combinations (only nondiabetic/nondiabetic and only diabetic/nondiabetic) will not yield discordant pairs because the classifications remain the same before and after the treatment.

The Table Below Summarizes Results from an Experiment in Which