Podcast
Questions and Answers
Which group was found to have a sedentary lifestyle more commonly?
Which group was found to have a sedentary lifestyle more commonly?
TV viewing and obesity were found to be correlated among black students.
TV viewing and obesity were found to be correlated among black students.
False
What were the three main selection phases of the sample design in the study?
What were the three main selection phases of the sample design in the study?
Selecting primary sample units, selecting schools, and random selection of subject classes.
The study found an inverse correlation between TV viewing and ________ consumption.
The study found an inverse correlation between TV viewing and ________ consumption.
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Match the following groups with their correlation to TV viewing and obesity:
Match the following groups with their correlation to TV viewing and obesity:
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What methodology was used to collect data from the students?
What methodology was used to collect data from the students?
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Parental consent was required for students to participate in the study.
Parental consent was required for students to participate in the study.
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Which demographic showed an inverse correlation between TV viewing and sedentary lifestyle?
Which demographic showed an inverse correlation between TV viewing and sedentary lifestyle?
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Study Notes
Study Methodology
- Objective: Investigate the relationship between television viewing, physical activity, fruit/vegetable consumption, and obesity among adolescents.
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Sample: 9-12 graders from public and private schools. Sample was representative of both racial groups (Black, Hispanic), A three-cluster sampling design was used for selection which ensured the validity of the sample
- First, primary sample units (50) in large counties were chosen.
- Second, schools (150) within the PSUs were selected
- Third, random selections of 1-2 subject classes per grade level were chosen for participation
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Data Collection:
- YRBS questionnaires administered in class by trained personnel.
- Parental consent obtained.
- Variables collected included: TV viewing (quantified by hours of viewing), physical activity (quantified by frequency of sweating/non-sweating activities), and fruit/vegetable consumption (quantified by the frequency of consumption over a week.)
- Measurements were made through self-reported data.
- Weight and height were also recorded. (participants had to remove their shoes.)
- Method Triangulation: Used multiple methods to collect data to increase validity and reliability.
- Demand characteristics: A note that using self-reported measures could have introduced biases into findings.
Study Findings
- Sedentary Lifestyle: More common for higher-grade students, females, and ethnic minorities.
- TV Viewing and Obesity: Only found to be linked in white females and males, and Hispanic females.
- TV Viewing and Sedentary Lifestyle: Linked in white and Hispanic adolescents, but inversely related to black students
- TV Viewing and Fruit/Vegetable Consumption: Inverse correlation observed (more TV viewing linked to less fruit/vegetable consumption).
Discussion (implications)
- Limited Access to Interventions: Adolescents often lack access to preventive health interventions about obesity and risk factors.
- Risk Factors: Exposure to less-healthy foods and insufficient physical activity are identified as significant risk factors.
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Description
This quiz explores the study methodology investigating how television viewing, physical activity, and fruit/vegetable consumption relate to obesity among adolescents. It focuses on the sampling design used with 9-12 graders, emphasizing the data collection methods involved.
