The independent variable in the research question, What is the effect of noise levels on postoperative pain and blood pressure fluctuations in ICU patients? is:
A) Blood pressure
B) ICU patients
C) Noise levels
D) Postoperative pain
Question 2
The dependent variable in the research question Is the quality of life of nursing home residents affected by their functional ability or hearing acuity? is:
A) Quality of life
B) Functional ability
C) Hearing acuity
D) Residence in a nursing home