Page of 2 -ZOOM A study was done to explore the effects of coffee drinking on me
ID: 3314236 • Letter: P
Question
Page of 2 -ZOOM A study was done to explore the effects of coffee drinking on measures of glucose and lipid metabolism in individuals who have not previously consumed coffee. 270 individuals were recruited into the study and randomly assigned to either consume 4 cups per day f instant coffee (n=190) or remain coffee free (n=80) for 12 weeks. (14 points) 1. What type of study design was used? [1 point] 2. At the end of the 12 weeks, 34 of the coffee drinkers were measured to have newly diagnosed high glucose levels and 21 of the non-coffee drinkers were measured to have high glucose levels. Fill in and label the 2x2 table below with the results of this study [2 points] and calculate [2 points] and interpret [4 points] the Relative Risk of high glucose diagnosis in the sample Yes No Totals 3. What was the incidence of high glucose levels in the coffee drinkers? [1 point] 4. The authors were asked about the potential of Diabetes being a confounder in this study. BRIEFLY discuss why Diabetes may or may not be a potential confounder in this study [4 points] A new screening test is developed to identify early stage Breast Cancer. The developers claim higher quality standards compared to the traditional mammogram. The results of their initial quality testing are below (13 points) Breast Cancer 6794105/download?download frd-1 NoExplanation / Answer
Solution5:
sensitivity=true positive/true positive+false negative
=322/322+80
=0.800995
=0.800995*100=80.09%
Solution6:
specificity=True negative/true negative+false positive
=170/170+43
=170/213
=0.7981221
=0.7981221*100
=79.81%
Solution7:
322
Solution8:
positive predictive value=true positive/true positive+false positive
=322/322+43
=322/365
= 0.8821918
= 0.8821918*100
=88.21918%
Solution9:
negative predictive value=true negative/true negatve+false negative
=170/170+80
=0.68
=0.68*100
=68%
Related Questions
Navigate
Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.