A new and relatively expensive medication is released into the population to treat type II diabetes. A doctor notices that poor patients are less likely to see effects from the medication than more wealthy patients, but after conducting a survey the doctor finds the poor patients are less likely to fully comply with their medication regimen because they cannot afford to take the medication on a regular basis. This is an example of which of the following?

 

A) Confounding

B) Statistical interaction

C) Selection bias

D) Recall bias

Statistical interaction.

Step-by-step explanation

This is an example of Statistical interaction.

Interaction among variables, also known as effect modification, exists when the effect of 1 explanatory variable on the outcome depends on the particular level or value of another explanatory variable.

Here less effect of medication is noticed for poor patients because regularity of medication is affecting it.

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