Which factor is most likely to be a mediating variable in a study to determine if high doses of vitamin C help reduce the subjects' susceptibility to influenza?
a. The subjects' use of influenza vaccine
b. The subject' knowledge of vitamin C's functions
c. The gender of the potential subjects
d. The marital status of the potential subjects
ANS: A
Feedback
A An extraneous or mediating variable is one that interferes with the operations of the variables being studied, such as the study's outcome, which is susceptibility to influenza.
B A subject's knowledge of vitamin C's functions is not likely to act as a mediating variable in this study.
C The gender of participants is not likely to act as a mediating variable in this instance.
D The marital status of subjects is not likely to act as a mediating variable in this scenario.
You might also like to view...
A client with nephrotic syndrome is prescribed 0.8 gm/kg/day of protein. What should the client receive in addition to this daily protein amount?
a. 1-3 grams of sodium b. 2-3 grams of potassium from dietary sources c. An additional 20 kcals/kg of calories from other sources d. Additional protein equal to the amount of protein lost in the client's 24-hour urine collection
The patient on frequent doses of meperidine (Demerol) complains of constipation. The initial intervention the nurse should make is:
a. offer fruit such as prunes or apricots. b. request an order for an enema. c. report the condition to the charge nurse. d. increase oral fluid intake.
According to the Recent Life Changes Questionnaire, which situation would most necessitate a complete assessment of a person's stress status and coping abilities?
a. A person who has been assigned more responsibility at work b. A parent whose job required relocation to a different city c. A person returning to college after an employer ceased operations d. A man who recently separated from his wife because of marital problems
To pick up an obese patient from the floor
A. have one assistant pick up each extremity. B. at least two gait belts will be necessary. C. use a mechanical device, sling, or lifting sheet. D. sit the patient up and help her to stand.