A nurse researcher opts to use a stratified sample in a research study for which reason?
A) The sample population is divided into subsets that are homogeneous for a particular trait or feature.
B) The sample population is divided into subsets for random assignment into an intervention or a usual-care group.
C) The sample population is randomly assigned to a specific subgroup that will vary from the others on the basis of type of treatment.
D) The sample population is randomly assigned to a specific subgroup that will vary from the others on the basis of treatment duration.

Question

Quizplus · Accepted Answer

Stratified sampling involves dividing the population into subgroups (or strata) that share a similar characteristic or trait, and then randomly selecting participants from each subgroup. This is done to ensure that the sample is representative of the population and that there is an adequate number of participants from each subgroup in the final sample.
In the case of a nurse researcher, using a stratified sample could be useful if there are important characteristics or traits that are known to be associated with the outcome being studied. By dividing the population into subgroups based on these characteristics, the researcher can ensure that the sample includes an adequate number of participants from each subgroup, which can improve the generalizability of the findings.

A Nurse Researcher Opts to Use a Stratified Sample in a Research