QuestionAugust 25, 2025

An experiment was performed by a scientific research team to determine the association between number of car accidents and occurrence of liver disease. Which of the following could be a potential confounding variable in the experiment?Check all that apply. Select all that apply: liver disease average number of alcoholic drinks per week scientific research team Age of the study participant

An experiment was performed by a scientific research team to determine the association between number of car accidents and occurrence of liver disease. Which of the following could be a potential confounding variable in the experiment?Check all that apply. Select all that apply: liver disease average number of alcoholic drinks per week scientific research team Age of the study participant
An experiment was performed by a scientific research team to determine the association between number of car accidents and occurrence of liver disease. Which of the following could be a potential confounding variable in the experiment?Check all that apply. Select all that apply: liver disease average number of alcoholic drinks per week scientific research team Age of the study participant

Solution
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Answer

Average number of alcoholic drinks per week, Age of the study participant Explanation 1. Define Confounding Variable A confounding variable is an external factor that affects both the independent and dependent variables, potentially skewing results. 2. Identify Potential Confounders - **Average number of alcoholic drinks per week**: This could influence both car accidents (due to impaired driving) and liver disease (due to alcohol's effect on the liver). - **Age of the study participant**: Age can affect the likelihood of both car accidents (younger or older drivers may have more accidents) and liver disease (risk increases with age).

Explanation

1. Define Confounding Variable<br /> A confounding variable is an external factor that affects both the independent and dependent variables, potentially skewing results.<br /><br />2. Identify Potential Confounders<br /> - **Average number of alcoholic drinks per week**: This could influence both car accidents (due to impaired driving) and liver disease (due to alcohol's effect on the liver).<br /> - **Age of the study participant**: Age can affect the likelihood of both car accidents (younger or older drivers may have more accidents) and liver disease (risk increases with age).
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