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Dive into the research topics where Greg D. Sacks is active.

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Featured researches published by Greg D. Sacks.


JAMA Surgery | 2014

Evaluation of Hospital Readmissions in Surgical Patients: Do Administrative Data Tell the Real Story?

Greg D. Sacks; Aaron J. Dawes; Marcia M. Russell; Anne Y. Lin; Melinda Maggard-Gibbons; Deborah Winograd; Hallie R. Chung; James S. Tomlinson; Areti Tillou; Stephen B. Shew; Darryl T. Hiyama; H. Gill Cryer; F. Charles Brunicardi; Jonathan R. Hiatt; Clifford Y. Ko

IMPORTANCE The Centers for Medicare & Medicaid Services has developed an all-cause readmission measure that uses administrative data to measure readmission rates and financially penalize hospitals with higher-than-expected readmission rates. OBJECTIVES To examine the accuracy of administrative codes in determining the cause of readmission as determined by medical record review, to evaluate the readmission measures ability to accurately identify a readmission as planned, and to document the frequency of readmissions for reasons clinically unrelated to the original hospital stay. DESIGN, SETTING, AND PARTICIPANTS Retrospective review of all consecutive patients discharged from general surgery services at a tertiary care, university-affiliated teaching hospital during 8 consecutive quarters (quarter 4 [October through December] of 2009 through quarter 3 [July through September] of 2011). Clinical readmission diagnosis determined from direct medical record review was compared with the administrative diagnosis recorded in a claims database. The number of planned hospital readmissions defined by the readmission measure was compared with the number identified using clinical data. Readmissions unrelated to the original hospital stay were identified using clinical data. MAIN OUTCOMES AND MEASURES Discordance rate between administrative and clinical diagnoses for all hospital readmissions, discrepancy between planned readmissions defined by the readmission measure and identified by clinical medical record review, and fraction of hospital readmissions unrelated to the original hospital stay. RESULTS Of the 315 hospital readmissions, the readmission diagnosis listed in the administrative claims data differed from the clinical diagnosis in 97 readmissions (30.8%). The readmission measure identified 15 readmissions (4.8%) as planned, whereas clinical data identified 43 readmissions (13.7%) as planned. Unrelated readmissions comprised 70 of the 258 unplanned readmissions (27.1%). CONCLUSIONS AND RELEVANCE Administrative billing data, as used by the readmission measure, do not reliably describe the reason for readmission. The readmission measure accounts for less than half of the planned readmissions and does not account for the nearly one-third of readmissions unrelated to the original hospital stay. Implementation of this readmission measure may result in unwarranted financial penalties for hospitals.


JAMA Surgery | 2015

Relationship Between Hospital Performance on a Patient Satisfaction Survey and Surgical Quality

Greg D. Sacks; Elise H. Lawson; Aaron J. Dawes; Marcia M. Russell; Melinda Maggard-Gibbons; David S. Zingmond; Clifford Y. Ko

IMPORTANCE The Centers for Medicare and Medicaid Services include patient experience as a core component of its Value-Based Purchasing program, which ties financial incentives to hospital performance on a range of quality measures. However, it remains unclear whether patient satisfaction is an accurate marker of high-quality surgical care. OBJECTIVE To determine whether hospital performance on a patient satisfaction survey is associated with objective measures of surgical quality. DESIGN, SETTING, AND PARTICIPANTS Retrospective observational study of participating American College of Surgeons National Surgical Quality Improvement Project (ACS NSQIP) hospitals. We used data from a linked database of Medicare inpatient claims, ACS NSQIP, the American Hospital Association annual survey, and Hospital Compare from December 2, 2004, through December 31, 2008. A total of 103 866 patients older than 65 years undergoing inpatient surgery were included. Hospitals were grouped by quartile based on their performance on the Hospital Consumer Assessment of Healthcare Providers and Systems survey. Controlling for preoperative risk factors, we created hierarchical logistic regression models to predict the occurrence of adverse postoperative outcomes based on a hospitals patient satisfaction scores. MAIN OUTCOMES AND MEASURES Thirty-day postoperative mortality, major and minor complications, failure to rescue, and hospital readmission. RESULTS Of the 180 hospitals, the overall mean patient satisfaction score was 68.0% (first quartile mean, 58.7%; fourth quartile mean, 76.7%). Compared with patients treated at hospitals in the lowest quartile, those at the highest quartile had significantly lower risk-adjusted odds of death (odds ratio = 0.85; 95% CI, 0.73-0.99), failure to rescue (odds ratio = 0.82; 95% CI, 0.70-0.96), and minor complication (odds ratio = 0.87; 95% CI, 0.75-0.99). This translated to relative risk reductions of 11.1% (P = .04), 12.6% (P = .02), and 11.5% (P = .04), respectively. No significant relationship was noted between patient satisfaction and either major complication or hospital readmission. CONCLUSIONS AND RELEVANCE Using a national sample of hospitals, we demonstrated a significant association between patient satisfaction scores and several objective measures of surgical quality. Our findings suggest that payment policies that incentivize better patient experience do not require hospitals to sacrifice performance on other quality measures.


BMJ Quality & Safety | 2015

Teamwork, communication and safety climate: a systematic review of interventions to improve surgical culture

Greg D. Sacks; Evan M Shannon; Aaron J. Dawes; Johnathon C. Rollo; David Nguyen; Marcia M. Russell; Clifford Y. Ko; Melinda Maggard-Gibbons

Objectives To define the target domains of culture-improvement interventions, to assess the impact of these interventions on surgical culture and to determine whether culture improvements lead to better patient outcomes and improved healthcare efficiency. Background Healthcare systems are investing considerable resources in improving workplace culture. It remains unclear whether these interventions, when aimed at surgical care, are successful and whether they are associated with changes in patient outcomes. Methods PubMed, Cochrane, Web of Science and Scopus databases were searched from January 1980 to January 2015. We included studies on interventions that aimed to improve surgical culture, defined as the interpersonal, social and organisational factors that affect the healthcare environment and patient care. The quality of studies was assessed using an adapted tool to focus the review on higher-quality studies. Due to study heterogeneity, findings were narratively reviewed. Findings The 47 studies meeting inclusion criteria (4 randomised trials and 10 moderate-quality observational studies) reported on interventions that targeted three domains of culture: teamwork (n=28), communication (n=26) and safety climate (n=19); several targeted more than one domain. All moderate-quality studies showed improvements in at least one of these domains. Two studies also demonstrated improvements in patient outcomes, such as reduced postoperative complications and even reduced postoperative mortality (absolute risk reduction 1.7%). Two studies reported improvements in healthcare efficiency, including fewer operating room delays. These findings were supported by similar results from low-quality studies. Conclusions The literature provides promising evidence for various strategies to improve surgical culture, although these approaches differ in terms of the interventions employed as well as the techniques used to measure culture. Nevertheless, culture improvement appears to be associated with other positive effects, including better patient outcomes and enhanced healthcare efficiency. Trial registration number CRD42013005987.


Journal of The American College of Surgeons | 2014

Preventable Readmissions to Surgical Services: Lessons Learned and Targets for Improvement

Aaron J. Dawes; Greg D. Sacks; Marcia M. Russell; Anne Y. Lin; Melinda Maggard-Gibbons; Deborah Winograd; Hallie R. Chung; Areti Tillou; Jonathan R. Hiatt; Clifford Y. Ko

BACKGROUND Hospital readmissions are under intense scrutiny as a measure of health care quality. The Center for Medicare and Medicaid Services (CMS) has proposed using readmission rates as a benchmark for improving care, including targeting them as nonreimbursable events. Our study aim was to describe potentially preventable readmissions after surgery and to identify targets for improvement. STUDY DESIGN Patients discharged from a general surgery service over 8 consecutive quarters (Q4 2009 to Q3 2011) were selected. A working group of attending surgeons defined terms and created classification schemes. Thirty-day readmissions were identified and reviewed by a 2-physician team. Readmissions were categorized as preventable or unpreventable, and by target for future quality improvement intervention. RESULTS Overall readmission rate was 8.3% (315 of 3,789). The most common indication for initial admission was elective general surgery. Among readmitted patients in our sample, 28% did not undergo an operation during their index admission. Only 21% (55 of 258) of readmissions were likely preventable based on medical record review. Of the preventable readmissions, 38% of patients were discharged within 24 hours and 60% within 48 hours. Dehydration occurred more frequently among preventable readmissions (p < 0.001). Infection accounted for more than one-third of all readmissions. Among preventable readmissions, targets for improvement included closer follow-up after discharge (49%), management in the outpatient setting (42%), and avoidance of premature discharge (9%). CONCLUSIONS A minority of readmissions may potentially be preventable. Targets for reducing readmissions include addressing the clinical issues of infection and dehydration as well as improving discharge planning to limit both early and short readmissions. Policies aimed at penalizing reimbursements based on readmission rates should use clinical data to focus on inappropriate hospitalization in order to promote high quality patient care.


American Journal of Surgery | 2014

Reducing the rate of catheter-associated bloodstream infections in a surgical intensive care unit using the Institute for Healthcare Improvement central line bundle

Greg D. Sacks; Brian S. Diggs; Pantelis Hadjizacharia; Donald J. Green; Ali Salim; Darren Malinoski

BACKGROUND Central line-associated bloodstream infections (CLABSIs) are a significant source of morbidity and mortality. This study sought to determine whether implementation of the Institute for Healthcare Improvement (IHI) Central Line Bundle would reduce the incidence of CLABSIs. METHODS The IHI Central Line Bundle was implemented in a surgical intensive care unit. Patient demographics and the rate of CLABSIs per 1,000 catheter days were compared between the pre- and postintervention groups. Contemporaneous infection rates in an adjacent ICU were measured. RESULTS Baseline demographics were similar between the pre- and postintervention groups. The rate of CLABSIs per catheter days decreased from 19/3,784 to 3/1,870 after implementation of the IHI Bundle (1.60 vs 5.02 CLABSIs per 1,000 catheter days; rate ratio .32 [.08 to .99, P < .05]). There was no significant change in CLABSIs in the control ICU. CONCLUSIONS Implementation of the IHI Central Line Bundle reduced the incidence of CLABSIs in our SICU by 68%, preventing 12 CLABSIs, 2.5 deaths, and saving


Journal of The American College of Surgeons | 2015

Which Patients Require More Care after Hospital Discharge? An Analysis of Post-Acute Care Use among Elderly Patients Undergoing Elective Surgery

Greg D. Sacks; Elise H. Lawson; Aaron J. Dawes; Melinda Maggard Gibbons; David S. Zingmond; Clifford Y. Ko

198,600 annually.


Surgery | 2015

Cost effectiveness of nonoperative management versus laparoscopic appendectomy for acute uncomplicated appendicitis

James X. Wu; Aaron J. Dawes; Greg D. Sacks; F. Charles Brunicardi; Emmett B. Keeler

BACKGROUND The use of post-acute care is common among the elderly and accounts for


Annals of Surgery | 2016

Surgeon perception of risk and benefit in the decision to operate

Greg D. Sacks; Aaron J. Dawes; Susan L. Ettner; Robert H. Brook; Craig R. Fox; Melinda Maggard-Gibbons; Clifford Y. Ko; Marcia M. Russell

62 billion in annual Medicare expenditures. However, little is known about post-acute care use after surgery. STUDY DESIGN Data were merged between the American College of Surgeons National Surgical Quality Improvement Program (ACS-NSQIP) and Medicare claims for 2005 to 2008. Post-acute care use, including skilled nursing facilities (SNF), inpatient rehabilitation facilities (IRF), and home health care (HHC) were analyzed for 3 operations: colectomy, pancreatectomy, and open abdominal aortic aneurysm repair. Controlling for both preoperative risk factors and the occurrence of postoperative complications, we used multinomial logistic regression to estimate the odds of use for each type of post-acute care after elective surgery compared with home discharge. RESULTS Post-acute care was used frequently for patients undergoing colectomy (40.0%; total n=10,932), pancreatectomy (46.0%; total n=2,144), and open abdominal aortic aneurysm (AAA) repair (44.9%; total n=1,736). Home health was the most frequently reported post-acute care service for each operation (range 23.2% to 31.5%) followed by SNF (range 12.0% to 15.0%), and then by IRF (range 2.5% to 5.4%). The majority of patients with at least 1 inpatient complication were discharged to post-acute care (range 58.6% for open AAA repair to 64.4% for colectomy). In multivariable analysis, specific preoperative risk factors, including advanced age, poor functional status, and inpatient complications were significantly associated with increased risk-adjusted odds of discharge to post-acute care for each operation studied. CONCLUSIONS Among elderly patients, post-acute care use is frequent after surgery and is significantly associated with several preoperative risk factors and postoperative inpatient complications. Further work is needed to ensure that post-acute care services are used appropriately and cost-effectively.


Annals of Surgery | 2015

Morbidity and Mortality Conference 2.0.

Greg D. Sacks; Lawson Eh; Areti Tillou; Hines Oj

BACKGROUND Appendectomy remains the gold standard in the treatment of acute, uncomplicated appendicitis in the United States. Nonetheless, there is growing evidence that nonoperative management is safe and efficacious. METHODS We constructed a decision tree to compare nonoperative management of appendicitis with laparoscopic appendectomy in otherwise healthy adults. Model variables were abstracted from a literature review, data from the Healthcare Cost and Utilization Project data, the Medicare Physician Fee schedule, and the American College of Surgeons Surgical Risk Calculator. Uncertainty surrounding parameters of the model was assessed via 1-way and probabilistic sensitivity analyses. RESULTS Operative management cost


Cancer | 2015

Are primary care providers prepared to care for survivors of breast cancer in the safety net

Aaron J. Dawes; Marian Hemmelgarn; David Nguyen; Greg D. Sacks; Sheilah Clayton; Jacqueline R. Cope; Patricia A. Ganz; Melinda Maggard-Gibbons

12,213 per patient. Nonoperative management without interval appendectomy (IA) was the dominant strategy, costing

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Aaron J. Dawes

University of California

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Clifford Y. Ko

University of California

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Areti Tillou

University of California

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David Nguyen

University of California

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