A Study Is Conducted to Assess the Relationship Between Smoking

question 75

Multiple Choice

A study is conducted to assess the relationship between smoking status and forced expiratory volume in one second (FEV₁) .  Subjects are randomly selected and categorized based on smoking status.  Group A consists of 200 nonsmokers, group B consists of 200 light smokers (1-7 cigarettes per day) , group C consists of 200 moderate smokers (8-22 cigarettes per day) , and group D consists of 200 heavy smokers (23+ cigarettes per day) .  FEV₁ is quantitatively measured in all participants using properly calibrated office spirometers.  Which of the following is the most appropriate statistical method to compare the mean FEV₁ results among all 4 groups?

• A)Analysis of variance
• B)Chi-square test
• C)Meta-analysis
• D)Multiple logistic regression
• E)Pearson correlation coefficient
• F)Two-sample t-test

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Definitions:

Unionization

The process of forming a union or becoming a member of one, typically with the goal of improving negotiations with employers over wages, benefits, and working conditions.

Dissatisfaction

A feeling of unhappiness or displeasure resulting from unmet expectations.

Union Election

A formal voting process where workers decide whether to establish a labor union to represent them in negotiations with management.

Voter Turnout

The percentage of eligible voters who cast a ballot in an election, regarded as a measure of citizens' engagement and participation in the electoral process.