In trying to measure the "treatment effect" of taking Tylenol on reducing your "next day's temperature from today", and given the fact that you only take Tylenol when you're feeling sick, which of the following conditions are likely? A) ETT ATE B) Selection Bias 0 C) Selection Bias

Question

In trying to measure the "treatment effect" of taking Tylenol on reducing your "next day's temperature from today", and given the fact that you only take Tylenol when you're feeling sick, which of the following conditions are likely?
A) ETT > ATE
B) Selection Bias > 0
C) Selection Bias < 0
D) ETT = ATE

Quizplus · Accepted Answer

Since you only take Tylenol when you're feeling sick, there is likely selection bias present in the analysis. This means that the treatment effect estimated in the population who takes Tylenol may not be representative of the true treatment effect in the overall population. Therefore, selection bias is likely greater than 0.

In Trying to Measure the "Treatment Effect" of Taking Tylenol