Childhood Obesity Research Methodology

Table of Contents

Extraneous Variables

The extraneous variables under this study are dieting aimed at weight reduction, exercising for weight loss, using vomiting pills or laxatives to lose weight, and taking drugs for weight loss. To rule out extraneous variables, randomization will be used. It will equate groups of participants and ensure that all of them have an equal chance of playing a part in the study.


This study will use questionnaires designed for measuring weight status and dietary behaviors. Even though measures of height, weight, and dietary intake can produce the most reliable and accurate results, their use in the large population-based research is limited due to the high costs (Leatherdale and Laxer, 2013). Moreover, they require obtaining consent; therefore, conducting acting consent procedures would not be feasible.

On the other hand, COMPASS’s protocols involve passive procedures for obtaining consent. According to the study conducted by Leatherdale and Laxer, COMPASS questionnaires are highly reliable. However, even though they meet both one-week and two-week test retests of self-reported measures of body height and weight, there is significant variability in dietary behaviors (2013). The data from the same study suggests that there are discrepancies between actual and self-reported measures of weight and height; therefore, the validity of the COMPASS questionnaires is questionable (Leatherdale and Laxer, 2013).

Online tool eaTracker is an alternative to traditional questionnaires; however, its validity and reliability are not sufficient, even in comparison to COMPASS instruments (Leatherdale and Laxer, 2013). The validity and reliability of developed instruments would be tested by comparison of the derived measure for BMI and the self-reported data.


Wellness, Academics & You (WAY) is a program aimed at the health improvement of children from kindergarten to fifth grade. It is the class-based course that provides students with a multidisciplinary series of resources that would help them to understand the state of their health and health-related habits, explore the ways to make informed decisions about personal wellness, and resist peer pressure related to risky health behaviors (WAY, n.d.).

WAY incorporates physical activity and health education into the school program to meet national health and education standards (WAY, n.d.). It also embeds language, mathematics, and arts into the core classroom. WAY provides educators with the materials and instruments necessary to alter students’ attitudes and make long-lasting changes in their behavior. The program facilitates communication between school and home (WAY, n.d.).

Data Collection

Data will be collected with the use of a web survey. The respondents will be required to fill in a form in the specifically designed online questionnaire (ESRC, 2007). It has many advantages over the e-mail data collection method. The online survey does not require the process of saving, reattaching, or opening documents, thus making it much easier to complete (ESRC, 2007). Participants in the survey would only have to fill it in and hit the ‘submit’ button.

Moreover, the questionnaires could be embellished with the use of special software. It could significantly increase the participation rate by making the survey more engaging for the students. The navigation of the questionnaires might be designed intuitively, thus allowing participants to skip instructions. The data from web surveys could be downloaded into the information analysis package (ESRC, 2007). Considering that the surveys will be conducted at school, not all students might have e-mail addresses; therefore, the use of the web questionnaires is recommended.


ESRC. (2007). . Web.

Leatherdale, S., & Laxer, R. (2013). Reliability and validity of the weight status and dietary intake measures in the COMPASS questionnaire: are the self-reported measures of body mass index (BMI) and Canada’s food guide servings robust? International Journal of Behavioral Nutrition and Physical Activity, 10(1), 42.

WAY. (n.d.). Wellness, Academics & You Series. Web.

Calculate the price
Make an order in advance and get the best price
Pages (550 words)
*Price with a welcome 15% discount applied.
Pro tip: If you want to save more money and pay the lowest price, you need to set a more extended deadline.
We know how difficult it is to be a student these days. That's why our prices are one of the most affordable on the market, and there are no hidden fees.

Instead, we offer bonuses, discounts, and free services to make your experience outstanding.
How it works
Receive a 100% original paper that will pass Turnitin from a top essay writing service
step 1
Upload your instructions
Fill out the order form and provide paper details. You can even attach screenshots or add additional instructions later. If something is not clear or missing, the writer will contact you for clarification.
Pro service tips
How to get the most out of your experience with My Homework Geeks
One writer throughout the entire course
If you like the writer, you can hire them again. Just copy & paste their ID on the order form ("Preferred Writer's ID" field). This way, your vocabulary will be uniform, and the writer will be aware of your needs.
The same paper from different writers
You can order essay or any other work from two different writers to choose the best one or give another version to a friend. This can be done through the add-on "Same paper from another writer."
Copy of sources used by the writer
Our college essay writers work with ScienceDirect and other databases. They can send you articles or materials used in PDF or through screenshots. Just tick the "Copy of sources" field on the order form.
See why 20k+ students have chosen us as their sole writing assistance provider
Check out the latest reviews and opinions submitted by real customers worldwide and make an informed decision.
Customer reviews in total
Current satisfaction rate
3 pages
Average paper length
Customers referred by a friend
15% OFF your first order
Use a coupon FIRST15 and enjoy expert help with any task at the most affordable price.
Claim my 15% OFF Order in Chat
Live ChatWhatsApp