Does The Complications Screening Program flag cases with process of care problems? Using explicit criteria to judge processes

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Abstract
Background. The Complications Screening Program (CSP) aims to identify 28 potentially preventable complications of hospital care using computerized discharge abstracts, including demographic information, diagnosis and procedure codes. Objective. To validate the CSP as a quality indicator by using explicit process of care criteria to determine whether hospital discharges flagged by the CSP experienced more process problems than unflagged discharges. Methods. The CSP was applied to computerized hospital discharge abstracts from Medicare beneficiaries ≥ 65 years old admitted in 1994 to hospitals in California and Connecticut for major surgery or medical treatment. Of 28 CSP complications, 17 occurred sufficiently frequently to study. Discharges flagged (cases) and unflagged (controls) by the CSP were sampled and photocopied medical records were obtained. Physicians specified detailed, objective, explicit criteria, itemizing 'key steps' in processes of care that could potentially have prevented or caused complications. Trained nurses abstracted medical records using these explicit criteria. Process problem rates between cases and controls were compared. Results. The final sample included 740 surgical and 416 medical discharges. Rates of process problems were high, ranging from 24.4 to 82.5% across CSP screens for surgical cases. Problems were lower for medical cases, ranging from 2.0 to 69.1% across CSP screens. Problem rates were 45.7% for surgical and 5.0% for medical controls. Rates of problems did not differ significantly across flagged and unflagged discharges. Conclusions. The CSP did not flag discharges with significantly higher rates of explicit process problems than unflagged discharges. Various initiatives throughout the USA use techniques similar to the CSP to identify complications of care. Based on these CSP findings, such approaches should be evaluated cautiously. Keywords:administrative data, discharge abstracts, hospital complications, processes of care, quality measurement

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