Treatment for tendon pain. Chronic Achilles tendon pain (i.e., tendinosis) is common among middle-aged recreational athletes. A
Question:
Treatment for tendon pain. Chronic Achilles tendon pain (i.e., tendinosis) is common among middle-aged recreational athletes. A group of Swedish physicians investigated the use of heavy-load eccentric calf muscle training to treat Achilles tendinosis (British Journal of Sports Medicine, Feb. 1, 2004). A sample of 25 patients with chronic Achilles tendinosis undertook the treatment. Data on tendon thickness (measured in millimeters) were collected by ultrasonography both before and following treatment of each patient. The researchers want to compare the mean tendon thickness before treatment with the mean tendon thickness after treatment.
a. Is this a designed experiment or an observational study? Explain.
b. What is the experimental unit of the study?
c. What is the response variable of the study?
d. What are the treatments in this experiment?
e. After reading Section 10.3, you will learn that patients represent a blocking factor in this study. How many levels are in the blocking factor?
Step by Step Answer:
Statistics Plus New Mylab Statistics With Pearson Etext Access Card Package
ISBN: 978-0134090436
13th Edition
Authors: James Mcclave ,Terry Sincich