Use the following to answer the questions below:
A 1997 study described in the European Journal of Clinical Nutrition compares the growth of vegetarian and omnivorous children, ages 7 - 11, in Northwest England. In the study, each of the 50 vegetarian children in the study was matched with an omnivorous child of the same age with similar demographic characteristics. One of the aspects on which the children were compared was their body mass index (BMI). The differences in BMI for each pair of children (one vegetarian and one omnivore) was computed as vegetarian BMI minus omnivore BMI.

-Which data analysis method is more appropriate in this situation: paired data difference in means or difference in means with two separate groups?
A) Paired data difference in means
B) Difference in means with two separate groups

Question

Use the following to answer the questions below:
A 1997 study described in the European Journal of Clinical Nutrition compares the growth of vegetarian and omnivorous children, ages 7 - 11, in Northwest England. In the study, each of the 50 vegetarian children in the study was matched with an omnivorous child of the same age with similar demographic characteristics. One of the aspects on which the children were compared was their body mass index (BMI). The differences in BMI for each pair of children (one vegetarian and one omnivore) was computed as vegetarian BMI minus omnivore BMI. 
 
-Which data analysis method is more appropriate in this situation: paired data difference in means or difference in means with two separate groups?
A) Paired data difference in means 
B) Difference in means with two separate groups

Quizplus · Accepted Answer

Paired data difference in means - each child is matched, or paired, with a child who is very similar to them (with the only difference being vegetarian versus omnivore).

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