All NSQIP data from the 10-hospital collaborative for the time periods January to December 2009 (period 1) and January to December 2010 (period 2) were collected. Data on 20 categories of postoperative complications and 30-day mortality were compared between periods. Complication comparisons and hospital costs associated with complications were calculated per 10,000 procedures. Statistical analysis was performed by Z-test.
There were 14,205 total surgical cases in period 1 and 14,901 surgical cases in period 2. Between periods (per 10,000 cases) there were significant improvements in superficial surgical site infections (鈭?9%, p = 0.0005), on ventilator longer than 48 hours (鈭?5%, p = 0.012), graft/prosthesis/flap failure (鈭?0%, p < 0.0001), acute renal failure (鈭?5%, p = 0.023), and wound disruption (鈭?4%, p = 0.011). Although mortality (per 10,000) was higher in period 2 (237.6 vs 232.3), no statistical difference was noted. Net costs avoided between these periods were calculated as $2,197,543 per 10,000 general and vascular surgery cases.
Data organization and scrutiny are the initial steps of process improvement. Participation in our regional surgical quality collaborative resulted in improved outcomes and reduced costs. Although the mechanisms for these changes are likely multifactorial, the collaborative establishes communication, process improvement, and frank discussion among the members as best practices are identified and shared and standardized processes are adopted.