A Study of Obesity Risk in Children in a Head

question 30

Multiple Choice

A study of obesity risk in children in a head start program used a food score calculated from a 45-question food survey to predict body mass index (BMI) percentile in these children 18 months after the initial survey. The study enrolled 20 children. The researchers used a linear regression model for the prediction of BMI percentile. The food scores ranged from 45 to 245. "Linear" refers to which of the following?

• A)Mean BMI percentile varies linearly with food score.
• B)Variation about the regression line varies linearly with food score.
• C)Each BMI percentile is linearly related to food score.
• D)All of the answer options are correct.

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Definitions:

Violence

The intentional use of physical force or power, threatened or actual, against oneself, another person, or against a group or community, which results in or has a high likelihood of resulting in injury, death, psychological harm, maldevelopment, or deprivation.

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Cold

Describes a low temperature environment or the feeling experienced when exposed to such conditions.

Original Medicare

A federal health insurance program in the United States for people who are 65 or older, certain younger people with disabilities, and people with End-Stage Renal Disease, consisting of Part A (hospital insurance) and Part B (medical insurance).