Researchers wanted to determine if there was an association between daily cantal

Question

Researchers wanted to determine if there was an association between daily cantaloupe consumption and the occurrence of colon cancer. The researchers looked at 93,176 women and asked them to report their cantaloupe-eating habits. The researchers also determined which of the women had adenocarcinoma. After their analysis, the researchers concluded that consumption of two or more servings of cantaloupe per day was associated with a reduction in adenocarcinoma. Complete parts (a) through (c) below. (a) What type of observational study was this? Explain O A This was a cohort study because t identified a group of Individuals to participate in the study and observed the ou o er a long period of time O B. This was a cross-sectional study because all information about the individuals was collected at a specific point in time OC. This was a case-control study because individuals that had a certain characteristic were matched with those that did not (b) What is the response variable in the study? Is the response variable qualitative or quantitative? What is the explanatory variable? What is the response variable in the study? Is the response variable qualitative or quantitative? 0 A. The response variable is whether the woman has adenocarcinoma or not. The response variable is qualitative. O B. The response variable is the number of individuals who participate in the study who eat two or more servings of cantaloupe per day. The response variable is quantitative. ( C. The response variable is the number of individuals who participate in the study. The response variable is quantitative O D. The response variable is consumption of cantaloupe. The response variable is quantitative. What is the explanatory variable? OA. The explanatory variable is the number of individuals who participate in the study who eat two or more servings of cantaloupe per day. O B. The explanatory variable is whether the woman has adenocarcinoma or not. O C. The explanatory variable is consumption of cantaloupe. O D. The explanatory variable is the number of individuals who participate in the study. n their renort he researchers stated that After a lustina nr varnus der noranhic and lifesh e variables da v onsumntinn wn nr mnre servinns was associated with 30% re lined nrevalenOR of

Explanation / Answer

solution=

a) what type of obeservational study was thi ? explain.
(option B )

This is a cross-ectional because the reserchers lokked at one group of women over a short period of time. there was no matching or follow -up so this not a case -control or cohort study.

b)what is the response variable in the study?is the response variable qualitative or quantitative?

(option-A)

The response variable is whether the women has nonmelanoma skin cancer or not.the response variable is qualitative

what is the explanatory variable

(option- C)

the explanatory variable is consumption of cantaloupe

c)  in the reports, researchers stated " after adjusting for various demographics and lifestyle variables, daily consumption of two or more cups was associated with 30% reduced prevalence of nonmelanoma skin cancer." Why was it important to adjust these variables?

(option-C)

The researchers may be concerned with confounding that occurs when the effects of two or more explanatory variables are not separated or when there are some explanatory variables that were not considered in a study, but that affect the value of the response variable.

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