
Missing Data in the American College of Surgeons National Surgical Quality Improvement Program Are Not Missing at Random: Implications and Potential Impact on Quality Assessments
Keywords: امور سربازان; ACS; American College of Surgeons; MAR; missing at random; NSQIP; National Surgical Quality Improvement Program; O/E ratio; ratio of observed-to-expected mortality; OR; odds ratio; RVU; relative value unit; SI; single imputation; VA; Veterans Affairs;