A Study of Obesity Risk in Children in a Head

question 18

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. The regression line that is calculated by standard regression programs or by hand is called the least-squares line because it:

• A)minimizes the distances of actual BMI percentiles from the regression line.
• B)minimizes the squared distances of the actual BMI percentiles from the regression line.
• C)minimizes sum of the squared distances of the actual BMI percentiles from the regression line.
• D)minimizes the sum of the distances of the actual BMI percentiles from the regression line.

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Definitions:

Braid

A complex structure or pattern formed by intertwining three or more strands of flexible material such as hair, wire, or fiber.

Evidence-Based Practice

A decision-making process that integrates the best available research with clinical expertise and patient values.

Scientific Evidence

Information obtained through systematic observation or experimentation that serves as a basis for conclusions or decisions within the scientific method.

Individual Expertise

The specific knowledge or skill set that an individual possesses, often as a result of education, training, and experience in a particular field.