Objective: To determine the mortality rate and associated factors for laparoscopic and open colectomy as derived from the Nationwide Inpatient Sample database.
Design: Retrospective cohort.
Setting: Nationwide Inpatient Sample database.
Patients: Between 2002 and 2007, the Nationwide Inpatient Sample estimated 1,314,696 patients underwent colectomy in the United States. Most (n = 1,231,184) were open, but 83,512 were laparoscopic. Patients who underwent a laparoscopic procedure that was converted to open were analyzed within the laparoscopic group on an intention-to-treat basis.
Main Outcome Measure: Mortality rate. Using a logistic regression model, patient and institutional characteristics were analyzed and evaluated for significant associations with in-hospital mortality.
Results: In a multivariate analysis, significant predictors of increased mortality included older age, male sex, lower socioeconomic status, comorbidities, and emergency or transfer admission. Additionally, a laparoscopic approach was an independent predictor of decreased mortality when compared with open colectomy (relative risk, 0.51; P < .001).
Conclusion: Even when controlling for comorbidities, socioeconomic status, practice setting, and admission type, laparoscopy is an independent predictor of decreased mortality for colon resection.
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