The role of outpatient facilities in explaining variations in risk-adjusted readmission rates between hospitals

Area of Science:

• Neonatal care quality assessment
• Healthcare services research
• Pediatric readmission analysis

Background:

• Assessing inpatient quality using risk-adjusted readmission rates is common.
• The influence of outpatient facilities on these readmission rates is often overlooked.
• Premature infants represent a high-risk population for readmissions.

Purpose of the Study:

• To validate risk-adjusted readmission rates as a quality measure for inpatient care.
• To determine the impact of outpatient facilities on readmission rates in premature infants.
• To differentiate the contributions of neonatal intensive care units (NICUs) and outpatient facilities to readmission variations.

Main Methods:

• Retrospective cohort study of 898 premature infants born between 1998-2001.
• Poisson regression models analyzed unplanned readmissions at multiple time points post-discharge.
• Data linkage included maternal/infant hospital records, inpatient, outpatient, and pharmacy databases.

Main Results:

• Patient-specific medical and sociodemographic factors explained most readmission variation.
• While NICUs showed associations with readmissions, outpatient facilities explained much of this variation.
• Outpatient facility characteristics, rather than NICU characteristics, were linked to readmission rate variability.

Conclusions:

• Excluding outpatient facilities from analysis overstates the impact of NICUs on readmissions.
• Outpatient facilities represent a significant, often ignored, factor in infant readmission variations.
• Accurate quality assessment requires incorporating outpatient care data into readmission analyses.