Chen et al 2015 collected data that was both

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because they would have taken a longer time to collect data from the participants. Chen et al. (2015) collected data that was both quantitative and categorical. The definition of quantitative data is, data that expresses a quantity or amount . The definition of categorical data is data that expresses descriptions of groups. Examples of quantitative data from the study are Height, Weight, BMI, age ect. Examples of categorical data are income level, education, race/ethnicity, household size ect. Chen et al. (2015) used Telephone Surveys using BRFSS protocol, observation and Census info, and Iri MedProfiler data, and IRi consumer panel as their method to collect the data in their study. The potential weaknesses of this type of data collection methods include: bias, inaccurate reporting of food, weight, ect by participants . Examples of this potential weakness in the study include missing data from food consumed outside the home. To answer the research question: what is the relationship between three food environments (individual factors, household-factors, and neighborhood-factors)and obesity, Chen et al. (2015) calculated the following statistics in their study: Odds ratio, regression analysis and confidence intervals. The purpose of all of these statistics is to see if there is a correlation
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4 FInal Project Paper between obesity and the variables within the study. For example the regression analysis is used to examine the influence of the variables. And the odds ratio is looking at the strength of the association between obesity and the factors mentioned above. Therefore, the use of these statistics in this study is appropriate because the researchers are looking to prove a positive correlation between obesity and various environments. Chen et al. (2015) used regression analysis to analyze their study in order to answer their research question. The potential weaknesses of using regression analysis, include the sensitivity to outliers. In this study, examples of this include food consumed outside the home not getting calculated Chen et al. (2015) sampled a group consisting of 38650 individuals The definition of demographics is data regarding the population and groups within it. The definition of inclusion
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