Iowa Model vs Johns Hopkins vs JBI: Choosing an EBP Framework

Most DNP and capstone committees expect you to name and apply a specific evidence-based practice framework, not just describe your project informally. The three most commonly required are the Iowa Model, the Johns Hopkins EBP Model, and the JBI model — here's how they differ and when each fits.

Iowa Model

Organized around triggering issues (problem-focused or knowledge-focused) that prompt a team to ask whether a practice change is a priority. Its defining feature is a strong organizational-fit emphasis — it explicitly asks whether the change is a priority for your institution before you invest further, which committees like because it mirrors real-world adoption decisions.

Johns Hopkins EBP Model

Structured around three question types — Practice, Evidence, Translation (PET) — with a strong emphasis on formally rating the strength and quality of each evidence source before synthesis. If your project needs to demonstrate a rigorous, gradable appraisal of the evidence you're drawing on, this model's appraisal tools are usually the most detailed of the three.

JBI Model

Positions evidence-based healthcare as combining evidence, clinical expertise, and patient preference, with global health and feasibility/appropriateness/meaningfulness/effectiveness (FAME) criteria built in. It's often the better fit for projects with an international or public-health angle, since it isn't built around a single country's healthcare system.

How to actually choose

• Check your program's requirement first — many DNP programs mandate a specific model; this is often not a free choice.
• If organizational buy-in is the biggest obstacle, the Iowa Model's priority-setting trigger fits naturally into your narrative.
• If your committee wants heavily graded evidence appraisal, Johns Hopkins gives you that structure ready-made.
• If your project has an international, public-health, or diverse-population angle, JBI's broader framing usually fits better.

Whichever model you use, name it explicitly and apply its actual steps in your write-up — a project that mentions a framework in the introduction but doesn't structure the rest of the paper around it is a common source of committee feedback.