The Accuracy of Present-on-Admission Reporting in Administrative Data

• Published in: Health services research 2011-12, Vol.46 (6pt1), p.1946-1962
• Main Authors: Goldman, L. Elizabeth, Chu, Philip W., Osmond, Dennis, Bindman, Andrew
• Format: Article
• Language: English
• Subjects: Accuracy; administrative data; Adult; Aged; Aged, 80 and over; Analysis; Angioplasty; Bacterial pneumonia; Balloon angioplasty; California; Comorbidity; Continuity of Patient Care - statistics & numerical data; Female; Gold standard; Heart attack; Heart failure; Hospital Mortality; Hospitalization; Hospitals; Humans; Male; Medical care; Medical care quality; Medical History Taking - statistics & numerical data; Medical records; Medical research; Medicine, Experimental; Middle Aged; Mortality; Myocardial infarction; Patient Admission; Patient Discharge; Pneumonia; Present-on-admission; Quality management; quality measurement; Risk Adjustment - methods; Transluminal angioplasty
• ISSN: 0017-9124; 1475-6773
• DOI: 10.1111/j.1475-6773.2011.01300.x

Objective To test the accuracy of reporting present‐on‐admission (POA) and to assess whether POA reporting accuracy differs by hospital characteristics. Data Sources We performed an audit of POA reporting of secondary diagnoses in 1,059 medical records from 48 California hospitals. Study Design We used patient discharge data (PDD) to select records with secondary diagnoses that are powerful predictors of mortality and could potentially represent comorbidities or complications among patients who either had a primary procedure of a percutaneous transluminal coronary angioplasty or a primary diagnosis of acute myocardial infarction, community‐acquired pneumonia, or congestive heart failure. We modeled the relationship between secondary diagnoses POA reporting accuracy (over‐reporting and under‐reporting) and hospital characteristics. Data Collection We created a gold standard from blind reion of the medical records and compared the accuracy of the PDD against the gold standard. Principal Findings The PDD and gold standard agreed on POA reporting in 74.3 percent of records, with 13.7 percent over‐reporting and 11.9 percent under‐reporting. For‐profit hospitals tended to overcode secondary diagnoses as present on admission (odds ratios [OR] 1.96; 95 percent confidence interval [CI] 1.11, 3.44), whereas teaching hospitals tended to undercode secondary diagnoses as present on admission (OR 2.61; 95 percent CI 1.36, 5.03). Conclusions POA reporting of secondary diagnoses is moderately accurate but varies by hospitals. Steps should be taken to improve POA reporting accuracy before using POA in hospital assessments tied to payments.