The nurse researcher selects matching as a technique in a ...

[kshipps]

The nurse researcher selects matching as a technique in a research study. What does the technique of matching in a sampling strategy contribute to the research?
 
  a. Improved overall design of the study
  b. Elimination of the need for a control group
  c. Increased equivalency of the comparison group
  d. Reduced sample size; subjects serve as their own controls

Question 2

The primary characteristic of a probability sample is considered to be what?
 
  a. Self-selection of subjects
  b. Random selection of the sample
  c. Subjects handpicked by the researcher
  d. Representation of proportional segments of the population

[kusterl]

Answer to Question 1

ANS: C

Feedback
A Matching by itself will not improve study design.
B Matching does not eliminate the control group; rather, it helps make equivalence between it and the treatment group.
C Matching is a special strategy used to construct an equivalent comparison group.
D Matching does not decrease sample size, and subjects do not serve as their own controls.

Answer to Question 2

ANS: B

Feedback
A Self-selection of subjects would be antithetical to probability sampling.
B The primary characteristic of a probability sample is random selection.
C Subjects being handpicked by a researcher represents a purposive sample, which is not a form of probability sampling.
D Proportional segment representation can be found in quota sampling, which is a form of nonprobability sampling.