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VOLUME 47 | NUMBER 1.2 | FEBRUARY 2012


Is Patient Safety Improving? National Trends in Patient Safety Indicators: 1998-2007

Keywords: Patient safety;quality;trends, outcomes, national.

Context: Emphasis has been placed on quality and patient safety in medicine; however, little is known about whether quality over time has actually improved in areas such as patient safety indicators (PSIs).

Objective: To determine whether national trends for hospital PSIs have improved from 1998 to 2007.

Data Sources: P 2004—2005 Surveillance, Epidemiology and End Results-Medicare data from three cities.

Design, Setting, and Participants: Using PSI criteria from the Agency for Healthcare Research and Quality, PSIs were identified in the Nationwide Inpatient Sample (NIS) for all eligible inpatient admissions between 1998 and 2007. Joinpoint regression was used to estimate annual percentage changes (APCs) for PSIs.

Manuel Outcomes: Annual percent change for PSIs.

Results: From 1998 to 2007, 7.6 million PSI events occurred for over 69 million hospitalizations. A total of 14 PSIs showed statistically significant trends. Seven PSIs had increasing APC: postoperative pulmonary embolism or deep vein thrombosis (8.94), postoperative physiological or metabolic derangement (7.67), postoperative sepsis (7.17), selected infections due to medical care (4.05), decubitus ulcer (3.05), accidental puncture or laceration (2.64), and postoperative respiratory failure (1.46). Seven PSIs showed decreasing APCs: birth trauma injury to neonate (?17.79), failure to rescue (?6.05), postoperative hip fracture (?5.86), obstetric traumavaginal without instrument (?5.69), obstetric traumavaginal with instrument (?4.11), iatrogenic pneumothorax (?2.5), and postoperative wound dehiscence (?1.8).

Conclusions: This is the first study to establish national trends of PSIs during the past decade indicating areas for potential quality improvement prioritization. While many factors influence these trends, the results indicate opportunities for either emulation or elimination of current patient safety trends.

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