Evidence-Based Practice for Nurses

CHAPTER OBJECTIVES

KEY TERMS

At the end of this chapter, you will be able to:

‹ Discuss ways research problems are
identified
‹ Describe relationships among the
purpose statement, the research
problems, and the research question
‹ Differentiate among associative,
causal, simple, complex,
nondirectional, directional, null, and
research hypotheses
‹ Use criteria to appraise research
questions

‹ Identify independent and dependent

variables

‹ Define mediators, moderators, and

confounding variables

‹ Compare the purposes of research

questions and evidence-based

practice (EBP) questions

‹ Describe the PICOT method

‹ Discuss ethical issues associated with

the development of research and EBP

questions

associative relationship
case studies
causal relationship
complex hypothesis
confounding variables
covary
dependent variable
directional hypothesis
empirical testing
extraneous variables

generalize

hypotheses

hypothesis testing

independent variable

mediators

moderators

nondirectional hypothesis

null hypothesis

PICOT model

pilot

problem statement

purpose statement

replication

research hypothesis

research problem

research question

research topic

simple hypothesis

statistical hypothesis

systematic reviews