1. You are doing your dissertation and are collecting data with BMCC
students about whether th...
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 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,
40 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.
Answers: 2
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