a cross-sectional study was conducted to investigate the associated between regular consumption and sugary drinks (defined as consuming at least one sugary drink perday) and the prevelence
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The goal is to investigate the association between regular consumption of sugary drinks (defined as consuming at least one sugary drink per day) and the prevalence of a specific health outcome (e.g., obesity, diabetes, dental issues). Show more…
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Adi S.
In 2017, the journal Obesity reported on trends in sugar-sweetened beverage (SSB) consumption. A random sample of youths aged 12 to 19 years old were asked to monitor all food and beverages consumed in a 24 -hour period. The study was done in 2003 and repeated in 2014 . The numbers who consumed a sugary beverage such as soda or fruit juice in a day are shown in the table. (Bleich et al., "Trends in Beverage Consumption among Children and Adults, 2003-2014," Obesity, vol. $26[2018]: 432-441 .$ doi: $10.1002 /$ oby. 22056 ) a. Calculate and compare the percentages of youths in this age group who consumed an SSB during the recording period. b. Check that the conditions for using a two-population confidence interval hold. c. Find the $95 \%$ confidence interval for the difference in the proportion of youth consuming an SSB in 2003 and 2014 . Based on your confidence interval, do you think there has been a change in sugar-sweetened beverage consumption among this age group? Explain.
A study of more than 50,000 U.S. nurses found that those who drank just one soda or fruit punch a day tended to gain much more weight and had an $80 \%$ increased risk in developing diabetes compared to those who drank less than one a month. (The Washington Post, August 25,2004). "The message is clear..... Anyone who cares about their health or the health of their family would not consume these beverages" said Walter Willett of the Harvard School of Public Health who helped conduct the study. The sugar and beverage industries said that the study was fundamentally flawed. "These allegations are inflammatory. Women who drink a lot of soda may simply have generally unhealthy lifestyles" said Richard Adamson of the American Beverage Association. a. Do you think that the study described was an observational study or an experiment? b. Is it reasonable to conclude that drinking soda or fruit punch causes the observed increased risk of diabetes? Why or why not?
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