A nurse researcher compared men's and women's level of stress following cardiac surgery, with men and women matched on length of stay in hospital. Length of stay in hospital is the:
A) Independent variable
B) Dependent variable
C) Mediating variable
D) Extraneous variable
Question 2
Qualitative researchers often begin with a sample where potential participants come forward and identify themselves. What type of sample is being used?
A) Convenience
B) Snowball
C) Purposive
D) Purposeful
