Mark E Cohen

Summary

Affiliation: American College of Surgeons
Country: USA

Publications

  1. doi Effect of subjective preoperative variables on risk-adjusted assessment of hospital morbidity and mortality
    Mark E Cohen
    American College of Surgeons, 633 N Saint Clair Street, Chicago, IL, USA
    Ann Surg 249:682-9. 2009
  2. doi Effect of delay to operation on outcomes in adults with acute appendicitis
    Angela M Ingraham
    Division of Research and Optimal Patient Care, American College of Surgeons, 633 N St Clair Street, Chicago, IL 60611
    Arch Surg 145:886-92. 2010
  3. doi Optimizing ACS NSQIP modeling for evaluation of surgical quality and risk: patient risk adjustment, procedure mix adjustment, shrinkage adjustment, and surgical focus
    Mark E Cohen
    Division of Research and Optimal Patient Care, American College of Surgeons, Chicago, IL 60611 3211, USA
    J Am Coll Surg 217:336-46.e1. 2013
  4. doi Development of an American College of Surgeons National Surgery Quality Improvement Program: morbidity and mortality risk calculator for colorectal surgery
    Mark E Cohen
    Division of Research and Optimal Patient Care, American College of Surgeons, Chicago, IL 6061 3211, USA
    J Am Coll Surg 208:1009-16. 2009
  5. ncbi Variability in length of stay after colorectal surgery: assessment of 182 hospitals in the national surgical quality improvement program
    Mark E Cohen
    Division of Research and Optimal Patient Care, American College of Surgeons, Chicago, IL 60611 3211, USA
    Ann Surg 250:901-7. 2009
  6. doi Risk adjustment in the American College of Surgeons National Surgical Quality Improvement Program: a comparison of logistic versus hierarchical modeling
    Mark E Cohen
    Division of Research and Optimal Patient Care, American College of Surgeons, 633 N Saint Clair St, 22nd Fl, Chicago, IL 60611 3211, USA
    J Am Coll Surg 209:687-93. 2009
  7. doi Association of surgical care improvement project infection-related process measure compliance with risk-adjusted outcomes: implications for quality measurement
    Angela M Ingraham
    Division of Research and Optimal Patient Care, American College of Surgeons, Chicago, IL, USA
    J Am Coll Surg 211:705-14. 2010
  8. doi Comparison of 30-day outcomes after emergency general surgery procedures: potential for targeted improvement
    Angela M Ingraham
    Division of Research and Optimal Patient Care, American College of Surgeons, Chicago, IL 60611, USA
    Surgery 148:217-38. 2010
  9. doi Identification of specific quality improvement opportunities for the elderly undergoing gastrointestinal surgery
    David J Bentrem
    Department of Surgery, Feinberg School of Medicine, Northwestern University, Chicago, Illinois, USA
    Arch Surg 144:1013-20. 2009
  10. doi Variation in quality of care after emergency general surgery procedures in the elderly
    Angela M Ingraham
    Division of Research and Optimal Patient Care, American College of Surgeons, Chicago, IL, USA
    J Am Coll Surg 212:1039-48. 2011

Collaborators

Detail Information

Publications33

  1. doi Effect of subjective preoperative variables on risk-adjusted assessment of hospital morbidity and mortality
    Mark E Cohen
    American College of Surgeons, 633 N Saint Clair Street, Chicago, IL, USA
    Ann Surg 249:682-9. 2009
    ....
  2. doi Effect of delay to operation on outcomes in adults with acute appendicitis
    Angela M Ingraham
    Division of Research and Optimal Patient Care, American College of Surgeons, 633 N St Clair Street, Chicago, IL 60611
    Arch Surg 145:886-92. 2010
    ..To examine the effect of delay from surgical admission to induction of anesthesia on outcomes after appendectomy for acute appendicitis in adults...
  3. doi Optimizing ACS NSQIP modeling for evaluation of surgical quality and risk: patient risk adjustment, procedure mix adjustment, shrinkage adjustment, and surgical focus
    Mark E Cohen
    Division of Research and Optimal Patient Care, American College of Surgeons, Chicago, IL 60611 3211, USA
    J Am Coll Surg 217:336-46.e1. 2013
    ..Finally, procedures have been developed to estimate surgical risk for individual patients. This article describes the development of, and justification for, these new statistical methods and reporting strategies in ACS NSQIP. ..
  4. doi Development of an American College of Surgeons National Surgery Quality Improvement Program: morbidity and mortality risk calculator for colorectal surgery
    Mark E Cohen
    Division of Research and Optimal Patient Care, American College of Surgeons, Chicago, IL 6061 3211, USA
    J Am Coll Surg 208:1009-16. 2009
    ..But currently available risk estimating systems have one or more limitations associated with lack of specificity to operation type, size of sample (reliability), range of outcomes predicted, and appreciation of hospital effects...
  5. ncbi Variability in length of stay after colorectal surgery: assessment of 182 hospitals in the national surgical quality improvement program
    Mark E Cohen
    Division of Research and Optimal Patient Care, American College of Surgeons, Chicago, IL 60611 3211, USA
    Ann Surg 250:901-7. 2009
    ..Our objective was to examine the feasibility of assessing LOS at 182 hospitals to identify institutions with outlying performance...
  6. doi Risk adjustment in the American College of Surgeons National Surgical Quality Improvement Program: a comparison of logistic versus hierarchical modeling
    Mark E Cohen
    Division of Research and Optimal Patient Care, American College of Surgeons, 633 N Saint Clair St, 22nd Fl, Chicago, IL 60611 3211, USA
    J Am Coll Surg 209:687-93. 2009
    ..Our objective was to evaluate differences in logistic versus hierarchical modeling for identifying hospitals with outlying outcomes in the ACS-NSQIP...
  7. doi Association of surgical care improvement project infection-related process measure compliance with risk-adjusted outcomes: implications for quality measurement
    Angela M Ingraham
    Division of Research and Optimal Patient Care, American College of Surgeons, Chicago, IL, USA
    J Am Coll Surg 211:705-14. 2010
    ....
  8. doi Comparison of 30-day outcomes after emergency general surgery procedures: potential for targeted improvement
    Angela M Ingraham
    Division of Research and Optimal Patient Care, American College of Surgeons, Chicago, IL 60611, USA
    Surgery 148:217-38. 2010
    ....
  9. doi Identification of specific quality improvement opportunities for the elderly undergoing gastrointestinal surgery
    David J Bentrem
    Department of Surgery, Feinberg School of Medicine, Northwestern University, Chicago, Illinois, USA
    Arch Surg 144:1013-20. 2009
    ..Specific complications occur more frequently in elderly patients undergoing major gastrointestinal (GI) tract operations that may represent opportunities for quality improvement...
  10. doi Variation in quality of care after emergency general surgery procedures in the elderly
    Angela M Ingraham
    Division of Research and Optimal Patient Care, American College of Surgeons, Chicago, IL, USA
    J Am Coll Surg 212:1039-48. 2011
    ..To explore this hypothesis, we evaluated 30-day outcomes following EGS procedures in the young and the elderly and determined whether hospital performance was consistent across these 2 age strata...
  11. doi Comparison of postoperative complication risk prediction approaches based on factors known preoperatively to surgeons versus patients
    Allison R Dahlke
    Department of Surgery, Surgical Outcomes and Quality Improvement Center, Feinberg School of Medicine, Northwestern University, Chicago, IL
    Surgery 156:39-45. 2014
    ....
  12. doi Validity and feasibility of the american college of surgeons colectomy composite outcome quality measure
    Ryan P Merkow
    Division of Research and Optimal Patient Care, American College of Surgeons, Chicago, IL 60611, USA
    Ann Surg 257:483-9. 2013
    ..To develop a reliable, robust, parsimonious, risk-adjusted 30-day composite colectomy outcome measure...
  13. doi The influence of resident involvement on surgical outcomes
    Mehul V Raval
    Division of Research and Optimal Patient Care, American College of Surgeons, Chicago, IL, USA
    J Am Coll Surg 212:889-98. 2011
    ..Although the training of surgical residents is often considered in national policy addressing complications and safety, the influence of resident intraoperative involvement on surgical outcomes has not been well studied...
  14. doi Improving American College of Surgeons National Surgical Quality Improvement Program risk adjustment: incorporation of a novel procedure risk score
    Mehul V Raval
    Division of Research and Optimal Patient Care, American College of Surgeons, Chicago, IL 60611 3211, USA
    J Am Coll Surg 211:715-23. 2010
    ..The purpose of this study was to improve standard ACS NSQIP risk adjustment using a novel procedure risk score...
  15. doi Effect of postdischarge morbidity and mortality on comparisons of hospital surgical quality
    Karl Y Bilimoria
    Division of Research and Optimal Patient Care, American College of Surgeons, Chicago, IL 60611, USA
    Ann Surg 252:183-90. 2010
    ..Our objectives were (1) to determine the frequency of postdischarge complications and deaths and (2) to determine whether hospital rankings change with inclusion of postdischarge outcomes...
  16. pmc Development and evaluation of the universal ACS NSQIP surgical risk calculator: a decision aid and informed consent tool for patients and surgeons
    Karl Y Bilimoria
    Division of Research and Optimal Patient Care, American College of Surgeons, Chicago, IL Surgical Outcomes and Quality Improvement Center, Department of Surgery, Feinberg School of Medicine, Northwestern University, Chicago, IL Electronic address
    J Am Coll Surg 217:833-42.e1-3. 2013
    ....
  17. doi Comparison of outlier identification methods in hospital surgical quality improvement programs
    Karl Y Bilimoria
    Division of Research and Optimal Patient Care, American College of Surgeons, 633 N St Clair Street, 22nd Floor, Chicago, IL 60611, USA
    J Gastrointest Surg 14:1600-7. 2010
    ..Our objective was to compare various methods used to classify hospitals as outliers in established surgical quality assessment programs by applying each approach to a single data set...
  18. doi Relevance of the c-statistic when evaluating risk-adjustment models in surgery
    Ryan P Merkow
    Division of Research and Optimal Patient Care, American College of Surgeons, Chicago, IL 60611, USA
    J Am Coll Surg 214:822-30. 2012
    ....
  19. doi A current profile and assessment of north american cholecystectomy: results from the american college of surgeons national surgical quality improvement program
    Angela M Ingraham
    Division of Research and Optimal Patient Care, American College of Surgeons, Chicago, IL, USA
    J Am Coll Surg 211:176-86. 2010
    ....
  20. doi Comparison of hospital performance in nonemergency versus emergency colorectal operations at 142 hospitals
    Angela M Ingraham
    Division of Research and Optimal Patient Care, American College of Surgeons, Northwestern University Feinberg School of Medicine, Chicago, IL, USA
    J Am Coll Surg 210:155-65. 2010
    ..However, information about the quality of emergency surgical care is lacking. The objective of this study was to assess whether hospitals have comparable outcomes for emergency and nonemergency operations...
  21. doi Underlying reasons associated with hospital readmission following surgery in the United States
    Ryan P Merkow
    Division of Research and Optimal Patient Care, American College of Surgeons, Chicago, Illinois2Surgical Outcomes and Quality Improvement Center SOQIC, Department of Surgery and Center for Healthcare Studies, Feinberg School of Medicine, Northwestern Uni
    JAMA 313:483-95. 2015
    ..Financial penalties for readmission have been expanded beyond medical conditions to include surgical procedures. Hospitals are working to reduce readmissions; however, little is known about the reasons for surgical readmission...
  22. doi Impact of hepatectomy surgical complexity on outcomes and hospital quality rankings
    Jennifer L Paruch
    Division of Research and Optimal Patient Care, American College of Surgeons, Chicago, IL, USA
    Ann Surg Oncol 21:1773-80. 2014
    ....
  23. doi Effect of cancer surgery complexity on short-term outcomes, risk predictions, and hospital comparisons
    Ryan P Merkow
    Division of Research and Optimal Patient Care, American College of Surgeons, Chicago, Il Department of Surgery, Surgical Outcomes and Quality Improvement Center, Feinberg School of Medicine, Northwestern University and Northwestern Institute for Comparative Effectiveness Research in Oncology, Robert H Lurie Comprehensive Cancer Center, Northwestern University, Chicago, Il Department of Surgery, University of Chicago Pritzker School of Medicine, Chicago, IL Electronic address
    J Am Coll Surg 217:685-93. 2013
    ....
  24. doi Post-discharge venous thromboembolism after cancer surgery: extending the case for extended prophylaxis
    Ryan P Merkow
    Department of Surgery, Jesse Brown VAMC, Northwestern University, Feinberg School of Medicine, Chicago, IL 60611, USA
    Ann Surg 254:131-7. 2011
    ..To (1) define the frequency of overall and postdischarge venous thromboembolism (VTE) after cancer surgery, (2) identify VTE risk for individual cancer operations, and (3) assess mortality rates in patients who experienced a VTE...
  25. doi Risk of discharge to postacute care: a patient-centered outcome for the american college of surgeons national surgical quality improvement program surgical risk calculator
    Sanjay Mohanty
    Department of Surgery, Henry Ford Hospital, Detroit, Michigan2Division of Research and Optimal Patient Care, American College of Surgeons, Chicago, Illinois
    JAMA Surg 150:480-4. 2015
    ..Patient-centered outcomes should be incorporated into such tools to widen their appeal and improve their usability...
  26. doi Comparison of hospital performance in trauma vs emergency and elective general surgery: implications for acute care surgery quality improvement
    Angela M Ingraham
    Division of Research and Optimal Patient Care, American College of Surgeons, Chicago, IL 45267 0558, USA
    Arch Surg 147:591-8. 2012
    ..We also evaluated the relationship between trauma and elective general surgery (ELGS) care, believing that performance would be similar across these services as it reflects institutional culture...
  27. doi Does hospital type affect pyloromyotomy outcomes? Analysis of the Kids' Inpatient Database
    Mehul V Raval
    Division of Research and Optimal Patient Care, American College of Surgeons, Chicago, IL, USA
    Surgery 148:411-9. 2010
    ..Pyloromyotomy is a common operative procedure performed on infants. The purpose of this study was to determine if hospital type affects lengths of stay (LOS), charges, and morbidity...
  28. doi Association of the 2011 ACGME resident duty hour reform with general surgery patient outcomes and with resident examination performance
    Ravi Rajaram
    Division of Research and Optimal Patient Care, American College of Surgeons, Chicago, Illinois2Surgical Outcomes and Quality Improvement Center SOQIC, Department of Surgery and Center for Healthcare Studies in the Institute for Public Health and Medicin
    JAMA 312:2374-84. 2014
    ..In 2011, the Accreditation Council for Graduate Medical Education (ACGME) restricted resident duty hour requirements beyond those established in 2003, leading to concerns about the effects on patient care and resident training...
  29. doi Comparison of outcomes after laparoscopic versus open appendectomy for acute appendicitis at 222 ACS NSQIP hospitals
    Angela M Ingraham
    Division of Research and Optimal Patient Care, American College of Surgeons, Chicago, IL 60611, USA
    Surgery 148:625-35; discussion 635-7. 2010
    ....
  30. doi Effect of trauma center status on 30-day outcomes after emergency general surgery
    Angela M Ingraham
    Division of Research and Optimal Patient Care, American College of Surgeons, Chicago, IL, USA
    J Am Coll Surg 212:277-86. 2011
    ..We hypothesized that EGS outcomes in TCs would be similar to outcomes in non-trauma centers (NTC); failure to support our hypothesis suggests that the effects of trauma performance improvement have extended beyond trauma patients...
  31. pmc Effect of wound classification on risk adjustment in American College of Surgeons NSQIP
    Mila H Ju
    Division of Research and Optimal Patient Care, American College of Surgeons, Chicago, IL Surgical Outcomes and Quality Improvement Center, Department of Surgery, Feinberg School of Medicine, Northwestern University, Chicago, IL Northwestern Memorial Hospital, Chicago, IL Electronic address
    J Am Coll Surg 219:371-81.e5. 2014
    ..However, it can be subjective and could potentially improperly bias hospital quality comparisons. The objective is to examine the effect of wound classification on hospital performance risk-adjustment models...
  32. ncbi The American College of Surgeons National Surgical Quality Improvement Program: achieving better and safer surgery
    Clifford Y Ko
    Division of Research and Optimal Patient Care and The American College of Surgeons National Surgical Quality Improvement Program ACS NSQIP, American College of Surgeons, Chicago, USA
    Jt Comm J Qual Patient Saf 41:199-204. 2015
    ....
  33. ncbi Statistical modeling of dental unit water bacterial test kit performance
    Mark E Cohen
    Naval Institute for Dental and Biomedical Research Great Lakes, IL, USA
    J Clin Dent 18:39-44. 2007
    ..Studies were conducted on specimens with known bacterial concentrations, and from dental units, to evaluate test kit accuracy across a range of bacterial types and loads...