DNP 830 Topic 1 DQ 1: Quantitative Method and QI
The word in contrast is the instruction. A defence of quantitative method that never says what qualitative would have given you instead has not made an argument.
Editorial process
Last reviewed · August 16, 2026
Argue for the method against the alternatives, not in isolation
Start from what quality improvement actually requires, because the method follows from the question rather than the other way round. Quality improvement asks whether a change produced a measurable difference in a defined outcome for a defined population, within a defined period. That question has a numeric answer, needs a pre-intervention baseline to compare against, and has to be reportable to people who will decide whether to keep the change. A quantitative method supplies exactly those: an operationally defined outcome measure, a comparison across time, and a result that can be stated as a magnitude rather than as an impression. Say that explicitly and you have the rationale. Then honour the contrast the prompt asks for: qualitative work would tell you why staff did or did not adopt the change and what the experience was like, which is genuinely valuable and is not the question a DPI project asks.
Mixed methods deserves its own sentence rather than a dismissal, since it is the strongest rival. A mixed design would answer both the whether and the why, and the honest reason for not using one in this context is feasibility rather than superiority: a doctoral project on a short timeline with one investigator cannot usually do both well, and a weak qualitative strand attached to a quantitative core adds length rather than knowledge. Then close on the alignment with quality improvement and be precise about the boundary, because the next topic in this course is exactly that distinction. Quality improvement applies existing evidence to a local setting to improve care there, while research generates new generalisable knowledge. The methods overlap heavily; the intent and the claim do not, and the claim you make at the end is what decides which activity you were doing. Say which side your own project sits on.
Likely learning objectives
Inferred from the brief — check these against your own rubric.
- 01Derive a method choice from the question being asked.
- 02Make a contrastive case rather than a standalone defence.
- 03Treat mixed methods as a serious rival with a feasibility answer.
- 04Distinguish quality improvement from research by intent and claim.
Read the full question
Review every instruction before using the planning guidance that follows.
Turn the brief into deliverables
- 01A statement of what a quality improvement question requires.
- 02The quantitative rationale tied to those requirements.
- 03What qualitative work would have added instead.
- 04A feasibility argument against mixed methods.
- 05The improvement-versus-research boundary, stated by intent.
What QI needs, why quantitative supplies it, what it misses
What the question requires
Set out the demands of a quality improvement question.
Why quantitative meets them
Map method features onto those requirements.
What qualitative would give instead
State the contrast fairly.
Mixed methods and feasibility
Treat the strongest rival and answer it honestly.
Improvement is not research
Draw the boundary by intent and by the claim made.
Evidence for the method choice itself
Recommended databases
- PubMed Central
- AHRQ
- CINAHL
- NCBI Bookshelf
Search sequence
- 1.Read a source that separates research, improvement and evidence-based practice.
- 2.Find a published improvement project using a quantitative design.
- 3.Look at the SQUIRE guidelines to see what an improvement report is expected to contain.
- 4.Search for the methodological critique of improvement work, so the defence is informed.
Reference shortlist
These are authoritative starting points, not a ready-made bibliography. A qualified reviewer must confirm that each source fits the assignment and supports the claim beside which it is cited.
Nothing here is cleared for citation until you have read it.
- 01
Continuous Quality Improvement
StatPearls, NCBI Bookshelf · 2023
Continuous quality improvement as its own activity, distinct from research.
- 02
Explanation and elaboration of the SQUIRE (Standards for Quality Improvement Reporting Excellence) Guidelines, V.2.0: examples of SQUIRE elements
BMJ Quality & Safety · 2016
The SQUIRE guidelines with their own explanation — the reporting standard the project is being aligned to.
- 03
Human Subjects Research Design
StatPearls, NCBI Bookshelf · 2023
Human subjects research design — the categories the design questions turn on.
- 04
Section 4: Ways To Approach the Quality Improvement Process
Agency for Healthcare Research and Quality · 2024
A practical improvement process, showing where measurement sits in it.
- 05
Ethical oversight in quality improvement and quality improvement research: new approaches to promote a learning health care system
BMC Medical Ethics · 2015
Where improvement and research overlap in oversight terms — the boundary case that tests your distinction.
Review before submission
Common mistakes
- Defending quantitative method without saying what the alternatives would give.
- Dismissing qualitative work as unrigorous rather than as answering another question.
- Treating quality improvement and research as the same activity with different names.
- Providing no evidence, when the prompt asks for it explicitly.
Submission checklist
- Does your rationale start from the question rather than the method?
- Have you said what qualitative work would have contributed?
- Is mixed methods addressed on feasibility rather than dismissed?
- Is the improvement-versus-research boundary stated by intent and claim?
Use this guide to plan and review your own work. Follow your institution's rules and read our academic-integrity policy.
Written by
Aaron Bishop
MA, Education
assignment interpretation and research-methods coaching across disciplines
Aaron leads the EssayCrackers editorial desk. He works on how assignment briefs are read — what a rubric is actually asking for, and where students most often answer a different question than the one set.
Reviewed by
Dr. Nathan Cole
PhD, Rhetoric & Composition
Argumentation and thesis development
Nathan teaches first-year composition and directs a university writing center. He reviews EssayCrackers guides for argumentative soundness and citation accuracy.