Question

For the experiments described in this Exercises identify the subjects, the factors, the treatments, and the response variables.

Adolescent obesity is a serious health risk affecting more than 5 million young people in the United States alone. Laparoscopic adjustable gastric banding has the potential to provide a safe and effective treatment. Fifty adolescents between 14 and 18 years old with a body mass index higher than 35 were recruited from the Melbourne, Australia, community for the study. Twenty-five were randomly selected to undergo gastric banding, and the remaining 25 were assigned to a supervised lifestyle intervention program involving diet, exercise, and behavior modification. All subjects were followed for two years, and their weight loss was recorded

Answer 1

(1) Subjects: 50 adolescents between 14 and 18 years old with a body mass index higher than 35, recruited fromthe Melbourne, Australia, community

(2) Factors: (i) gastric banding (ii) supervised lifestyle intervention program

(3) Treatments: (i) diet (ii) exercise (iii) behavioral modification

(iv) response variable: weight loss