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Updated: Apr 16, 2026

Measuring the Functional Abilities of Children Aged 3-6 Years Old with Observational Methods and Computer Tools
Published on: June 20, 2020
Observation-status patients in children's hospitals with and without dedicated observation units in 2011
Michelle L Macy1, Matthew Hall2, Elizabeth R Alpern3
1Departments of Emergency Medicine and Pediatrics, Child Health Evaluation and Research Unit, University of Michigan Medical School, Ann Arbor, Michigan.
Insights
Dedicated pediatric observation units (OU) increase same-day discharges but do not affect overall length of stay or costs. Further data on care location is needed for comprehensive comparisons of hospital care models.
Area of Science:
- Pediatric healthcare quality
- Hospital operational efficiency
- Healthcare administration
Background:
- Pediatric observation units (OUs) are known to reduce length of stay (LOS) and care costs.
- However, the impact of dedicated OUs on overall hospital-level outcomes for observation-status stays remains unevaluated.
Purpose of the Study:
- To compare outcomes of observation-status stays in hospitals with and without dedicated OUs.
- To analyze the influence of dedicated OUs on LOS, costs, inpatient conversion, and return care.
Main Methods:
- A cross-sectional analysis was performed using hospital administrative data.
- Outcomes for observation-status stays were compared between hospitals with and without dedicated OUs in 2011.
- Data included 136,239 stays across 31 children's hospitals.
Main Results:
- Hospitals with dedicated OUs had a higher percentage of same-day discharges (23.8% vs. 22.1%).
- Risk-adjusted LOS and standardized costs were similar between hospitals with and without dedicated OUs.
- Conversion to inpatient status was higher in hospitals with dedicated OUs (11.06% vs. 9.63%).
- Return visits and readmissions were comparable.
Conclusions:
- Dedicated pediatric OUs appear to influence same-day and morning discharges.
- The presence of a dedicated OU did not negatively impact other hospital-level outcomes like LOS, costs, or readmissions.
- Future administrative datasets should include care location to enable better comparisons of hospital care models.
Background:
Pediatric observation units (OUs) have demonstrated reductions in lengths of stay (LOS) and costs of care. Hospital-level outcomes across all observation-status stays have not been evaluated in relation to the presence of a dedicated OU in the hospital.
Objective:
To compare observation-status stay outcomes in hospitals with and without a dedicated OU.
Design:
Cross-sectional analysis of hospital administrative data.
Methods:
Observation-status stay outcomes were compared in hospitals with and without a dedicated OU across 4 categories: (1) LOS, (2) standardized costs, (3) conversion to inpatient status, and (4) return care.
Setting/Patients:
Observation-status stays in 31 free-standing children's hospitals contributing observation patient data to the Pediatric Health Information System database, 2011.
Results:
Fifty-one percent of the 136,239 observation-status stays in 2011 occurred in 14 hospitals with a dedicated OU; the remainder were in 17 hospitals without. The percentage of observation-status same-day discharges was higher in hospitals with a dedicated OU compared with hospitals without (23.8 vs 22.1, P < 0.001), but risk-adjusted LOS in hours and total standardized costs were similar. Conversion to inpatient status was higher in hospitals with a dedicated OU (11.06%) compared with hospitals without (9.63%, P < 0.01). Adjusted odds of return visits and readmissions were comparable.
Conclusions:
The presence of a dedicated OU appears to have an influence on same-day and morning discharges across all observation-status stays without impacting other hospital-level outcomes. Inclusion of location of care (eg, dedicated OU, inpatient unit, emergency department) in hospital administrative datasets would allow for more meaningful comparisons of models of hospital care.
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