Author Question: A group of 709 patients with lung cancer was compared to a group of 709 controls. For each patient ... (Read 60 times)

ETearle · **on:** Jul 24, 2018

A group of 709 patients with lung cancer was compared to a group of 709 controls. For each patient with lung cancer, a control patient from the same hospital and the same sex and age as the lung cancer patient was selected. The two groups were compared on their smoking habits. Which of the following applies to this study?
a. Randomized Experiment
b. Prospective Study
c. Casecontrol Study
d. Placebo Control

Question 2

In a study of 62,641 female nurses the amount of selenium in toenail clippings was measured, and then they were followed for a number of years to determine the risk of cancer. Which of the following applies to this study?
a. Randomized Experiment
b. Prospective Study
c. Placebo Control
d. Single Blind