1.You are doing your dissertation and are collecting data with BMCC students about whether they develop depression during their time at school and possible risk factors for depression. You recruited 200 current students and administered one survey at one timepoint asking about depression symptoms and demographic and biologic characteristics.

a.What kind of study is this? ______________________

b.You had 30 students who were underweight, 75 who were normal weight, 90 who were overweight, and the rest who were obese. What kind of variable is weight? ___________________

c.Among your underweight or normal weight students, 20 reported depression. Among your overweight or obese students, 35 developed depression. Construct a 2 x 2 table with these results. Hint: you will have to combine categories.

d.What is the appropriate measure of disease frequency in this study? _____________

e.Calculate the disease frequency for the two weight categories from your 2 x 2 table.

f.Is being overweight or obese a risk for developing depression? Calculate the appropriate measure, comparing to normal weight or underweight students. Interpret.