Readmissions, nationally.

Thirty-day readmission rates, causes, predictors, and costs after any diagnosis or procedure, from the only US database that follows patients across hospitals.

What it is

The database built for the readmission question.

The Nationwide Readmissions Database (NRD), part of AHRQ's Healthcare Cost and Utilization Project, links roughly 17 million discharges a year across hospitals within a state, so a patient's return admission is captured wherever it happens. It is the standard source for national 30- and 90-day readmission studies, the outcome that hospitals, payers, and journals care about most.

What it is built for

Scale, ~17 million weighted discharges a year, linked within the calendar year.

Design, readmission rates, causes, predictors, costs, and trends after any index diagnosis or procedure; comparisons between treatments or patient groups.

Limits, no linkage across calendar years or states; no post-discharge mortality; coded data only.

How it works

The method, in plain terms.

01

Index admission

Diagnosis or procedure codes

02

Link readmissions

Patient linkage within the year

03

30-day window

Or 90-day; calendar rules

04

Causes

Primary diagnosis at readmission

05

Predictors

Multivariable, survey-weighted

06

Costs & trends

Charges, LOS, year-on-year

How you benefit

Why authors start here.

The project, step by step

How an NRD study runs with Cohira.

Start with a free feasibility note →

1

Scope the question

We turn your idea into an index event, a readmission window, and a comparison NRD can answer.

2

Protocol & codes

Index codes, exclusions, outcomes, covariates, and the weighting plan, pre-specified.

3

Build the cohort

Index admissions linked to their readmissions, with the calendar-year rules applied honestly.

4

Analysis

Rates, causes, predictors, costs, and trends in reproducible code, with the checks reviewers expect.

5

Manuscript

Drafted with you to RECORD/STROBE and formatted to the target journal.

6

Submit & revise

Journal shortlist, submission package, and reviewer responses to a decision.

Published examples

What NRD studies look like in print.

Independent, peer-reviewed examples of what this route can produce.

Circ Cardiovasc IntervComparative cohort

Thirty-day readmissions after transcatheter aortic valve replacement in the United States

Kolte D, et al. · 2017

NRD analysis comparing readmission rates, causes, and costs across patient groups after TAVR.

View in journal →
Circ Cardiovasc IntervComparative cohort

Thirty-day readmission rate and costs after percutaneous coronary intervention in the United States

Tripathi A, et al. · 2017

Readmission rates and predictors compared across PCI indications and patient characteristics.

View in journal →
Am J CardiolComparative cohort

Etiologies, trends, and predictors of 30-day readmission in patients with heart failure

Arora S, et al. · 2017

Causes and predictors of heart-failure readmission compared across years and subgroups.

View in journal →

These are independent published studies, shown to illustrate the route, they are not Cohira's work.

Pricing

One fee, from idea to publication.

NRD study, idea to publication
Protocol, analysis with reproducible code, manuscript, journal shortlist, submission, and reviewer responses.
$1,800per study

Per project, never per author. Database access is billed at cost. Your week-by-week timeline is written into the free feasibility note before you pay. Booking more than one study? 10% off the second, 15% off from the third. Acceptance Guarantee & group pricing →

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Have a readmission question?

Tell us the index condition or procedure. You get a free feasibility note, design, expected sample, and realistic journals, before you commit.

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