What is the threat of internal validity that occurs when external events or conditions affect one group more than another?
A) Maturation
B) Selection
C) Testing
D) History
D
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A 14-year-old boy who has been diagnosed with Osgood-Schlatter disease reports painful swelling just below the knee for the past 5 months
Which response by the nurse is appropriate? a. "If these symptoms persist, you may need arthroscopic surgery." b. "You are experiencing degeneration of your knee, which may not resolve." c. "Your disease is due to repeated stress on the patellar tendon. It is usually self-limited, and your symptoms should resolve with rest." d. "Increasing your activity and performing knee-strengthening exercises will help decrease the inflammation and maintain mobility in the knee."
How much greater is U.S. health-care spending compared to other nations?
1. About 2.5 times as high 2. About 4 times as high 3. About 7.5 times as high 4. About 10 times as high
The primary reason for differences in health status in the United States is
A. Ethnic groups, especially minorities. B. Geographic location. C. Noncompliant patients. D. Poverty or socioeconomic status. E. Sexual behavior.
The unique property of the heart that allows it to initiate its own electrical stimulation is known as ________.
A. autorhythmicity B. conductivity C. excitability D. contractility