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1.
Surg Endosc ; 33(4): 1216-1224, 2019 04.
Article in English | MEDLINE | ID: mdl-30167952

ABSTRACT

BACKGROUND: Health care providers, hospitals, and pay-for-performance programs are focused on strategies identifying patients at highest risk for re-admission after colorectal surgery. The study objective was to determine characteristics most associated with re-admission after elective colorectal surgery using a conceptual framework approach. METHODS: This is an observational study of Michigan Surgical Quality Collaborative clinical registry data for 8962 colorectal surgery cases between July-2012 and April-2015. Separate mixed models were fit using known re-admission risk factors aligned in categories that may impact re-admissions by different mechanisms. Overall model discrimination was evaluated using Area Under the Curve estimated on a hold-out data set and examining differences in predicted versus observed re-admission across risk quintiles. RESULTS: The overall 30-day re-admission rate was 10.5%. From Model 1 to Model 6, discrimination of re-admission was poor until Model 6 (AUC, 0.56, 0.61, 0.65, 0.63, 0.72, 0.81). Differences for observed re-admission rates comparing 'very low' versus 'very high' risk strata from Model 1 to Model 6 were 6%, 11%, 15%, 14%, 20%, and 30% respectively, and all comparisons were significant (p < 0.01). Though there were significant predictors in the first five models, most were no longer significant when additional predictors were included in subsequent models. Complications identified after discharge significantly increased the likelihood of re-admission and were the strongest predictors. CONCLUSION: Statistical models that include complications identified after discharge predict re-admission. Strategies to reduce re-admission after colorectal surgery should emphasize prevention of complications and more effective interventions to manage and ameliorate evolving complications identified after discharge.


Subject(s)
Colon/surgery , Digestive System Surgical Procedures/adverse effects , Elective Surgical Procedures/adverse effects , Patient Discharge , Patient Readmission/statistics & numerical data , Rectum/surgery , Aged , Facilities and Services Utilization , Female , Hospitals/standards , Humans , Male , Michigan , Middle Aged , Postoperative Complications , Registries , Reimbursement, Incentive , Risk Factors
2.
Surg Endosc ; 32(3): 1515-1524, 2018 03.
Article in English | MEDLINE | ID: mdl-28916895

ABSTRACT

BACKGROUND: Conversion from minimally invasive to open colorectal surgery remains common and costly. Robotic colorectal surgery is associated with lower rates of conversion than laparoscopy, but institutions and payers remain concerned about equipment and implementation costs. Recognizing that reimbursement reform and bundled payments expand perspectives on cost to include the entire surgical episode, we evaluated the role of minimally invasive conversion in total payments. METHODS: This is an observational study from a linked data registry including clinical data from the Michigan Surgical Quality Collaborative and payment data from the Michigan Value Collaborative between July 2012 and April 2015. We evaluated colorectal resections initiated with open and minimally invasive approaches, and compared reported risk-adjusted and price-standardized 30-day episode payments and their components. RESULTS: We identified 1061 open, 1604 laparoscopic, and 275 robotic colorectal resections. Adjusted episode payments were significantly higher for open operations than for minimally invasive procedures completed without conversion ($19,489 vs. $15,518, p < 0.001). The conversion rate was significantly higher with laparoscopic than robotic operations (15.1 vs. 7.6%, p < 0.001). Adjusted episode payments for minimally invasive operations converted to open were significantly higher than for those completed by minimally invasive approaches ($18,098 vs. $15,518, p < 0.001). Payments for operations completed robotically were greater than those completed laparoscopically ($16,949 vs. $15,250, p < 0.001), but the difference was substantially decreased when conversion to open cases was included ($16,939 vs. $15,699, p = 0.041). CONCLUSION: Episode payments for open colorectal surgery exceed both laparoscopic and robotic minimally invasive options. Conversion to open surgery significantly increases the payments associated with minimally invasive colorectal surgery. Because conversion rates in robotic colorectal operations are half of those in laparoscopy, the excess expenditures attributable to robotics are attenuated by consideration of the cost of conversions.


Subject(s)
Colon/surgery , Conversion to Open Surgery/economics , Health Care Costs , Laparoscopy/economics , Rectum/surgery , Robotic Surgical Procedures/economics , Adult , Aged , Databases, Factual , Digestive System Surgical Procedures/economics , Female , Humans , Laparoscopy/methods , Male , Michigan , Middle Aged , Retrospective Studies , Robotic Surgical Procedures/methods
3.
Am J Surg ; 215(4): 593-598, 2018 Apr.
Article in English | MEDLINE | ID: mdl-28629607

ABSTRACT

BACKGROUND: We sought to decrease organ space infection (OSI) following appendectomy for perforated acute appendicitis (PAA) by minimizing variation in clinical management. OBJECTIVE: A postoperative treatment pathway was developed and four recommendations were implemented: 1) clear documentation of post-operative diagnosis, 2) patients with unknown perforation status to be treated as perforated pending definitive diagnosis, 3) antibiotic therapy to be continued post operatively for 4-7 days after SIRS resolution, and 4) judicious use of abdominal computed tomography (CT) scanning prior to post-operative day 5. Patient demographics and potential clinical predictors of OSI were captured. The primary end point was development of OSI within 30 days of discharge. Secondary endpoints included length of stay (LOS), readmission rate, other complications and secondary procedures performed. RESULTS: A total of 1246 appendectomies were performed and we excluded patients <18 years (n = 205), interval appendectomies (n = 51) or appendectomies for other diagnosis (n = 37). Among the remaining 953 patients, 133 (14.0%) were perforated and 21 of these (15.8%) developed OSI. Comparing pre (n = 91) to post (n = 42) protocol patients, we saw similar rates of OSI (16.5 vs 14.3%, p = 0.75) with a peak in OSI development immediately prior to protocol implementation which dropped to baseline levels 1 year later based on CUSUM analysis. Readmission rates fell by 49.7% (14.3 vs 7.1%, p = 0.39) without increase in LOS (5.3 vs 5.7 days, p = 0.55) comparing patients pre and post protocol, although these results did not reach clinical significance. CONCLUSIONS: The implementation of and compliance with a post-operative protocol status post appendectomy for PAA demonstrated a trend towards diminishing readmission rates and decreased utilization of CT imaging, but did not affect OSI rates. Additional approaches to diminishing OSI following management of perforated appendicitis need to be evaluated.


Subject(s)
Abdominal Abscess/prevention & control , Appendectomy , Appendicitis/surgery , Critical Pathways , Intestinal Perforation/surgery , Postoperative Care/standards , Postoperative Complications/prevention & control , Surgical Wound Infection/prevention & control , Adolescent , Adult , Anti-Bacterial Agents/therapeutic use , Child , Documentation/standards , Endpoint Determination , Female , Humans , Male , Michigan , Quality Improvement , Tomography, X-Ray Computed , Treatment Outcome
4.
Am J Surg ; 213(3): 548-552, 2017 Mar.
Article in English | MEDLINE | ID: mdl-27939006

ABSTRACT

OBJECTIVE: Surgery remains the cornerstone therapy for colorectal cancer (CRC). This study assesses CRC quality measures for surgical cases in Michigan. METHODS: In this retrospective cohort study, processes of care and outcomes for CRC resection cases were abstracted in 30 hospitals in the Michigan Surgical Quality Collaborative (2014-2015). Measures were case-mix and reliability adjusted, using logistic regression models. RESULTS: For 871 cases (640 colon cancer, 231 rectal cancer), adjusted morbidity (27.4%) and mortality rates (1.5%) were low. Adjusted process measures showed gaps in quality of care. Mesorectal excision was documented in 59.4% of rectal cancer (RC) cases, 65% of RC cases had sphincter preserving surgery, 18.7% of cases had < 12 lymph nodes examined, 7.9% had a positive margin, 52.1% of stage II/III RC cases had neoadjuvant therapy, and 36% of ostomy cases had site marking. CONCLUSION: This study finds gaps in quality of care measures for CRC, suggesting opportunity for regional quality improvement.


Subject(s)
Colorectal Neoplasms/surgery , Quality of Health Care , Aged , Anal Canal , Blood Transfusion/statistics & numerical data , Cohort Studies , Colorectal Neoplasms/pathology , Female , Humans , Length of Stay/statistics & numerical data , Lymph Nodes/pathology , Male , Michigan/epidemiology , Middle Aged , Minimally Invasive Surgical Procedures/statistics & numerical data , Neoadjuvant Therapy/statistics & numerical data , Organ Sparing Treatments , Ostomy , Patient Readmission/statistics & numerical data , Reoperation/statistics & numerical data , Retrospective Studies , Surgical Wound Infection/epidemiology
5.
J Minim Invasive Gynecol ; 23(7): 1146-1151, 2016.
Article in English | MEDLINE | ID: mdl-27565997

ABSTRACT

STUDY OBJECTIVE: Because it is associated with fewer complications and more rapid recovery, the vaginal approach is preferred for benign hysterectomy. Patient characteristics that traditionally favor a vaginal approach include adequate vaginal access, small uterine size, and low suspicion for extrauterine disease. However, the low proportion of hysterectomies performed vaginally in the United States suggests that these data are not routinely applied in clinical practice. We sought to analyze the association of parity, prior pelvic surgery, and uterine weight with the use of the vaginal, laparoscopic, robotic, and abdominal approaches to hysterectomy. DESIGN: A retrospective cohort study (Canadian Task Force classification II-2). SETTING: The Michigan Surgical Quality Collaborative is a statewide organization of 52 academic and community hospitals in Michigan funded by Blue Cross and Blue Shield of Michigan/Blue Care Network, including patients from all insurance payers. PATIENTS: Five thousand six hundred eight women undergoing hysterectomy for benign gynecologic conditions from January 1, 2013, through December 8, 2013, and included in the Michigan Surgical Quality Collaborative. INTERVENTIONS: To assess potential for vaginal hysterectomy, a favorability score of 0, 1, 2, or 3 was calculated by summing 1 point each for parity ≥1, no prior pelvic surgery, and uterine weight <250 g. Frequencies of surgical approaches to hysterectomy were compared using chi-square tests across favorability scores. MEASUREMENTS AND MAIN RESULTS: The use of robotic hysterectomy was most frequent (41.9%, n = 2349/5608) followed by abdominal (19.7%, n = 1103/5608), laparoscopic (14.4%, n = 809/5608), vaginal (13.5%, n = 758/5608), and laparoscopic-assisted vaginal (10.5%, n = 589/5608) hysterectomy. With favorability scores of 0, 1, 2, and 3, vaginal hysterectomy was performed in 0.6% (n = 1/167), 5% (n = 66/1324), 13.7% (n = 415/3036), and 25.5% (n = 276/1081) of cases and abdominal hysterectomy in 41.9% (n = 70/167), 30.8% (n = 408/1324), 17.5% (n = 531/3036), and 8.7% (n = 94/1081), respectively. There was little variation in the rates of laparoscopic hysterectomy (13.3%-16.8%, p = .429) and robotic hysterectomy (39.5%-42.4%, p = .518) across favorability scores. CONCLUSION: In a population of women undergoing hysterectomy in the state of Michigan, the use of vaginal and abdominal hysterectomy varied with respect to parity, prior pelvic surgery, and uterine weight, but there was little variation in the use of laparoscopic and robotic approaches. The favorability score could potentially be used as a quality improvement tool to evaluate practice patterns with respect to the use of various surgical approaches to hysterectomy.


Subject(s)
Hysterectomy, Vaginal , Patient Satisfaction , Uterine Diseases/surgery , Cohort Studies , Female , Humans , Laparoscopy/methods , Michigan , Middle Aged , Quality Improvement , Retrospective Studies , Robotics
6.
Am J Surg ; 212(5): 857-862, 2016 Nov.
Article in English | MEDLINE | ID: mdl-27324383

ABSTRACT

BACKGROUND: The aim of this study was to determine hospital variation in clinical outcomes after appendectomy for acute appendicitis. METHODS: Using data from the Michigan Surgical Quality Collaborative, we selected patients with procedure codes for open or laparoscopic appendectomy with a diagnosis of acute appendicitis (2006 to 2011). We used multivariate regression models for risk adjustment of patient-level factors and reliability adjustment for sample size differences between hospitals. Adjusted rates of outcomes for each hospital were generated by multiplying ratios of observed to expected events by overall mean event rates. RESULTS: During the study period, 12,410 patients underwent appendectomies in 49 participating Michigan Surgical Quality Collaborative hospitals. Neither the mortality rate nor the rate of superficial or deep surgical site infection demonstrated significant variation. However, significant variation was observed for all other clinical outcomes, including a 14-fold difference of the rate of postoperative sepsis and septic shock. CONCLUSIONS: We found significant hospital variation in outcomes after appendectomy and identified missing variables that could help to explain the observed variation. These findings have been used to enhance ongoing quality improvement efforts across the state of Michigan.


Subject(s)
Appendectomy/methods , Appendicitis/surgery , Hospitals/trends , Laparoscopy/methods , Laparotomy/methods , Quality Improvement , Acute Disease , Adult , Aged , Appendectomy/adverse effects , Appendicitis/diagnosis , Databases, Factual , Female , Follow-Up Studies , Humans , Laparoscopy/adverse effects , Laparotomy/adverse effects , Length of Stay , Male , Middle Aged , Multivariate Analysis , Postoperative Complications/epidemiology , Postoperative Complications/physiopathology , Regression Analysis , Retrospective Studies , Treatment Outcome
7.
JAMA Surg ; 151(9): 823-30, 2016 09 01.
Article in English | MEDLINE | ID: mdl-27168356

ABSTRACT

IMPORTANCE: Increased costs of surgical complications have been borne mostly by third-party payers. However, numerous policy changes aimed at incentivizing high-quality care shift more of this burden to hospitals. The potential effect of these policies on hospitals and payers is poorly understood. OBJECTIVE: To evaluate costs associated with surgical quality and the relative financial burden on hospitals and payers. DESIGN, SETTING, AND PARTICIPANTS: We performed an observational study merging complication data from the Michigan Surgical Quality Collaborative and internal cost accounting data from the University of Michigan Health System from January 2, 2008, through April 16, 2015; the merged files from these data were created between June 5, 2015, and July 22, 2015. A total of 5120 episodes of surgical care for 24 surgical procedure groups (17 general surgical, 6 vascular, and 1 gynecologic) were examined. We report unadjusted and log-transformed risk-adjusted costs. MAIN OUTCOMES AND MEASURES: We compared hospital costs, third-party reimbursement (ie, payer costs), and hospital profit margin for cases with and without complications. RESULTS: The mean (SD) age of the 5120 patients was 56.0 (16.4) years, and 2883 (56.3) were female. The overall complication rate was 14.5% (744 of 5120) for all procedures, 14.7% (580 of 3956) for general surgery, 15.5% (128 of 828) for vascular surgery, and 10.7% (36 of 336) for gynecologic surgery. For all studied procedures, mean hospital costs were $19 626 (119%) higher for patients with complications ($36 060) compared with those without complications ($16 434). Mean third-party reimbursement was $18 497 (106%) higher for patients with complications ($35 870) compared with those without complications ($17 373). Consequently, with risk adjustment, overall profit margin decreased from 5.8% for patients without complications to 0.1% for patients with complications. CONCLUSIONS AND RELEVANCE: Hospitals and third-party payers experience increased costs with surgical complications, with hospitals experiencing a reduction in profit margin. Both hospitals and payers appear to currently have financial incentives to promote surgical quality improvement.


Subject(s)
Hospital Costs/statistics & numerical data , Insurance, Health, Reimbursement/statistics & numerical data , Postoperative Complications/economics , Quality Improvement/economics , Adult , Aged , Economics, Hospital/statistics & numerical data , Female , General Surgery/statistics & numerical data , Gynecologic Surgical Procedures/adverse effects , Gynecologic Surgical Procedures/statistics & numerical data , Humans , Male , Middle Aged , Postoperative Complications/etiology , Risk Adjustment , Vascular Surgical Procedures/adverse effects , Vascular Surgical Procedures/statistics & numerical data
8.
J Gastrointest Surg ; 20(6): 1223-30, 2016 06.
Article in English | MEDLINE | ID: mdl-26847352

ABSTRACT

Robotic colorectal surgery has been shown to have lower rates of unplanned conversion to open surgery when compared to laparoscopic surgery. Risk factors associated with conversion from robotic to open colectomy and comparisons of the risk factors between robotic and laparoscopic approaches have not been previously reported. Patients who underwent elective laparoscopic and robotic colorectal surgeries between July 1, 2012 and April 28, 2015, were identified in the Michigan Surgical Quality Collaborative registry. Candidate covariates were identified, and hierarchical logistic regression models were used to identify risk factors for conversion. There were 4796 cases that met study inclusion criteria. Conversion was required in 18.2 % of laparoscopic and 7.7 % of robotic cases (p < 0.0001). Risk factors for conversion in the laparoscopic group included the following: moderate/severe adhesions, obesity, colorectal cancer, hypertension, rectal operations, urgent priority, and tobacco use. Risk factors for conversion in the robotic group included the following: severe adhesions, bleeding disorder, presence of cancer, cirrhosis, and use of statins. Higher surgeon volume was protective in both groups. Conversion rates are lower for robotic than for laparoscopic colorectal surgery with fewer predictors of conversion. Recognition of factors predicting conversion may allow surgeons to choose an operative approach that optimizes the benefits of the available technologies.


Subject(s)
Colectomy/methods , Conversion to Open Surgery/statistics & numerical data , Laparoscopy , Rectum/surgery , Robotic Surgical Procedures , Adult , Aged , Databases, Factual , Female , Humans , Logistic Models , Male , Michigan , Middle Aged , Outcome Assessment, Health Care , Retrospective Studies , Risk Factors
9.
Ann Surg ; 264(6): 1044-1050, 2016 Dec.
Article in English | MEDLINE | ID: mdl-26756749

ABSTRACT

OBJECTIVE: The aim of the study was to characterize patient-reported outcomes of analgesia practices in a population-based surgical collaborative. BACKGROUND: Pain control among hospitalized patients is a national priority and effective multimodal pain management is an essential component of postoperative recovery, but there is little understanding of the degree of variation in analgesia practice and patient-reported pain between hospitals. METHODS: We evaluated patient-reported pain scores after colorectal operations in 52 hospitals in a state-wide collaborative. We stratified hospitals by quartiles of average pain scores, identified hospital characteristics, pain management practices, and clinical outcomes associated with highest and lowest case-mix-adjusted pain scores, and compared against Hospital Consumer Assessment of Healthcare Providers and Systems pain management metrics. RESULTS: Hospitals with the lowest pain scores were larger (503 vs 452 beds; P < 0.001), higher volume (196 vs 112; P = 0.005), and performed more laparoscopy (37.7% vs 27.2%; P < 0.001) than those with highest scores. Their patients were more likely to receive local anesthesia (31.1% vs 12.9%; P < 0.001), nonsteroidal anti-inflammatory drugs (33.5% vs 14.4%; P < 0.001), and patient-controlled analgesia (56.5% vs 22.8%; P < 0.001). Adverse postoperative outcomes were less common in hospitals with lowest pain scores, including complications (20.3% vs 26.4%; P < 0.001), emergency department visits (8.2% vs 15.8%; P < 0.001), and readmissions (11.3% vs 16.2%; P = 0.01). CONCLUSIONS: Pain management after colorectal surgery varies widely and predicts significant differences in patient-reported pain and clinical outcomes. Enhanced postoperative pain management requires dissemination of multimodal analgesia practices. Attention to patient-reported outcomes often omitted from surgical outcomes registries is essential to improving quality from the patient's perspective.


Subject(s)
Analgesia/methods , Digestive System Surgical Procedures , Pain Management/methods , Pain, Postoperative/prevention & control , Practice Patterns, Physicians'/statistics & numerical data , Aged , Diagnosis-Related Groups , Female , Hospitalization , Humans , Male , Michigan , Middle Aged , Pain Measurement , Retrospective Studies , Treatment Outcome
10.
Surg Endosc ; 30(2): 455-463, 2016 Feb.
Article in English | MEDLINE | ID: mdl-25894448

ABSTRACT

BACKGROUND: Current data addressing the role of robotic surgery for the management of colorectal disease are primarily from single-institution and case-matched comparative studies as well as administrative database analyses. The purpose of this study was to compare minimally invasive surgery outcomes using a large regional protocol-driven database devoted to surgical quality, improvement in patient outcomes, and cost-effectiveness. METHODS: This is a retrospective cohort study from the prospectively collected Michigan Surgical Quality Collaborative registry designed to compare outcomes of patients who underwent elective laparoscopic, hand-assisted laparoscopic, and robotic colon and rectal operations between July 1, 2012 and October 7, 2014. We adjusted for differences in baseline covariates between cases with different surgical approaches using propensity score quintiles modeled on patient demographics, general health factors, diagnosis, and preoperative co-morbidities. The primary outcomes were conversion rates and hospital length of stay. Secondary outcomes included operative time, and postoperative morbidity and mortality. RESULTS: A total of 2735 minimally invasive colorectal operations met inclusion criteria. Conversion rates were lower with robotic as compared to laparoscopic operations, and this was statistically significant for rectal resections (colon 9.0 vs. 16.9%, p < 0.06; rectum 7.8 vs. 21.2%, p < 0.001). The adjusted length of stay for robotic colon operations (4.00 days, 95% CI 3.63-4.40) was significantly shorter compared to laparoscopic (4.41 days, 95% CI 4.17-4.66; p = 0.04) and hand-assisted laparoscopic cases (4.44 days, 95% CI 4.13-4.78; p = 0.008). There were no significant differences in overall postoperative complications among groups. CONCLUSIONS: When compared to conventional laparoscopy, the robotic platform is associated with significantly fewer conversions to open for rectal operations, and significantly shorter length of hospital stay for colon operations, without increasing overall postoperative morbidity. These findings and the recent upgrades in minimally invasive technology warrant continued evaluation of the role of the robotic platform in colorectal surgery.


Subject(s)
Colonic Diseases/surgery , Colorectal Surgery , Laparoscopy , Postoperative Complications/surgery , Rectal Diseases/surgery , Robotic Surgical Procedures , Aged , Colonic Diseases/mortality , Colorectal Surgery/methods , Colorectal Surgery/mortality , Female , Humans , Laparoscopy/methods , Laparoscopy/mortality , Length of Stay/statistics & numerical data , Male , Middle Aged , Operative Time , Postoperative Complications/mortality , Propensity Score , Rectal Diseases/mortality , Rectum/surgery , Retrospective Studies , Robotic Surgical Procedures/methods , Robotic Surgical Procedures/mortality , Treatment Outcome , United States/epidemiology
11.
J Am Geriatr Soc ; 62(2): 352-7, 2014 Feb.
Article in English | MEDLINE | ID: mdl-24428139

ABSTRACT

OBJECTIVES: To determine whether failure to rescue, as a driver of mortality, can be used to identify which hospitals attenuate the specific risks inherent to elderly adults undergoing surgery. DESIGN: Retrospective cohort study. SETTING: State-wide surgical collaborative in Michigan. PARTICIPANTS: Older adults undergoing major general or vascular surgery between 2006 and 2011 (N = 24,216). MEASUREMENTS: Thirty-four hospitals were ranked according to risk-adjusted 30-day mortality and grouped into tertiles. Within each tertile, rates of major complications and failure to rescue were calculated, stratifying outcomes according to age (<75 vs ≥ 75). Next, differences in failure-to-rescue rates between age groups within each hospital were calculated. RESULTS: Failure-to-rescue rates were more than two times as high in elderly adults as in younger individuals in each tertile of hospital mortality (26.0% vs 10.3% at high-mortality hospitals, P < .001). Within hospitals, the average difference in failure-to-rescue rates was 12.5%. Nine centers performed better than expected, and three performed worse than expected, with the largest differences exceeding 25%. CONCLUSION: Although elderly adults experience higher failure-to-rescue rates, this does not account for hospitals' overall capacity to rescue individuals from complications. Comparing rates of younger and elderly adults within hospitals may identify centers where efforts toward complication rescue favor, or are customized for, elderly adults. These centers should be studied as part of the collaborative's effort to address the disparate outcomes that elderly adults in Michigan experience.


Subject(s)
Outcome Assessment, Health Care , Postoperative Complications/mortality , Quality of Health Care/standards , Surgical Procedures, Operative/mortality , Aged , Female , Follow-Up Studies , Hospital Mortality/trends , Humans , Male , Michigan/epidemiology , Middle Aged , Retrospective Studies , Survival Rate/trends , Vascular Surgical Procedures/mortality
12.
Prev Chronic Dis ; 8(3): A62, 2011 May.
Article in English | MEDLINE | ID: mdl-21477502

ABSTRACT

INTRODUCTION: The accurate identification of acute stroke cases is an essential requirement of hospital-based stroke registries. We determined the accuracy of acute stroke diagnoses in Michigan hospitals participating in a prototype of the Paul Coverdell National Acute Stroke Registry. METHODS: From May through November 2002, registry teams (ie, nurse and physician) from 15 Michigan hospitals prospectively identified all suspect acute stroke admissions and classified them as stroke or nonstroke. Medical chart data were abstracted for a random sample of 120 stroke and 120 nonstroke admissions. A blinded independent physician panel then classified each admission as stroke, nonstroke, or unclassifiable, and the overall accuracy of the registry was determined. RESULTS: The physician panel reached consensus on 219 (91.3%) of 240 admissions. The panel identified 105 stroke admissions, 93 of which had been identified by the registry teams (sensitivity = 88.6%). The panel identified 114 nonstroke admissions, all of which had been identified as nonstrokes by the registry teams (specificity = 100%). The positive and negative predictive value of the registry teams' designation was 100% and 90.5%, respectively. The registry teams' assessment of stroke subtype agreed with that of the panel in 78.5% of cases. Most discrepancies were related to the distinction between ischemic stroke and transient ischemic attack. CONCLUSION: The accuracy of hospitals participating in a hospital-based stroke registry to identify acute stroke admissions was very good; hospitals tended to underreport rather than to overreport stroke admissions. Stroke registries should periodically conduct studies to ensure that the accuracy of case ascertainment is maintained.


Subject(s)
Hospitalization/statistics & numerical data , Registries/statistics & numerical data , Stroke/diagnosis , Diagnosis, Differential , False Positive Reactions , Humans , Michigan/epidemiology , Predictive Value of Tests , Prospective Studies , Reproducibility of Results , Sensitivity and Specificity
13.
BMC Neurol ; 8: 19, 2008 Jun 11.
Article in English | MEDLINE | ID: mdl-18547421

ABSTRACT

BACKGROUND: The Paul Coverdell National Acute Stroke Registry (PCNASR) is a U.S. based national registry designed to monitor and improve the quality of acute stroke care delivered by hospitals. The registry monitors care through specific performance measures, the accuracy of which depends in part on the reliability of the individual data elements used to construct them. This study describes the inter-rater reliability of data elements collected in Michigan's state-based prototype of the PCNASR. METHODS: Over a 6-month period, 15 hospitals participating in the Michigan PCNASR prototype submitted data on 2566 acute stroke admissions. Trained hospital staff prospectively identified acute stroke admissions, abstracted chart information, and submitted data to the registry. At each hospital 8 randomly selected cases were re-abstracted by an experienced research nurse. Inter-rater reliability was estimated by the kappa statistic for nominal variables, and intraclass correlation coefficient (ICC) for ordinal and continuous variables. Factors that can negatively impact the kappa statistic (i.e., trait prevalence and rater bias) were also evaluated. RESULTS: A total of 104 charts were available for re-abstraction. Excellent reliability (kappa or ICC > 0.75) was observed for many registry variables including age, gender, black race, hemorrhagic stroke, discharge medications, and modified Rankin Score. Agreement was at least moderate (i.e., 0.75 > kappa >/=; 0.40) for ischemic stroke, TIA, white race, non-ambulance arrival, hospital transfer and direct admit. However, several variables had poor reliability (kappa < 0.40) including stroke onset time, stroke team consultation, time of initial brain imaging, and discharge destination. There were marked systematic differences between hospital abstractors and the audit abstractor (i.e., rater bias) for many of the data elements recorded in the emergency department. CONCLUSION: The excellent reliability of many of the data elements supports the use of the PCNASR to monitor and improve care. However, the poor reliability for several variables, particularly time-related events in the emergency department, indicates the need for concerted efforts to improve the quality of data collection. Specific recommendations include improvements to data definitions, abstractor training, and the development of ED-based real-time data collection systems.


Subject(s)
Quality of Health Care/organization & administration , Quality of Health Care/statistics & numerical data , Registries/statistics & numerical data , Stroke/classification , Stroke/epidemiology , Data Collection/standards , Humans , Michigan/epidemiology , Patient Discharge/statistics & numerical data , Quality Control , Reproducibility of Results , Stroke/therapy
14.
Stroke ; 39(6): 1779-85, 2008 Jun.
Article in English | MEDLINE | ID: mdl-18369173

ABSTRACT

BACKGROUND AND PURPOSE: Statins reduce the risk of stroke in at-risk populations and may improve outcomes in patients taking statins before an ischemic stroke (IS). Our objectives were to examine the effects of pretreatment with statins on poor outcome in IS patients. METHODS: Over a 6-month period all acute IS admissions were prospectively identified in 15 hospitals participating in a statewide acute stroke registry. Poor stroke outcome was defined as modified Rankin score >/=4 at discharge (ie, moderate-severe disability or death). Multivariable logistic regression models and matched propensity score analyses were used to quantify the effect of statin pretreatment on poor outcome. RESULTS: Of 1360 IS patients, 23% were using statins before their stroke event and 42% had a poor stroke outcome. After multivariable adjustment, pretreatment with statins was associated with lower odds of poor outcome (OR=0.74, 95% CI 0.52, 1.02). A significant interaction (P<0.01) was found between statin use and race. In whites, statins were associated with statistically significantly lower odds of poor outcome (OR=0.61, 95% CI 0.42, 0.86), but in blacks statins were associated with a nonstatistically significant increase in poor outcome (OR=1.82, 95% CI 0.98, 3.39). Matched propensity score analyses were consistent with the multivariable model results. CONCLUSIONS: Pretreatment with statins was associated with better stroke outcomes in whites, but we found no evidence of a beneficial effect of statins in blacks. These findings indicate the need for further studies, including randomized trials, to examine differential effects of statins on ischemic stroke outcomes among whites and blacks.


Subject(s)
Brain Ischemia/drug therapy , Brain Ischemia/prevention & control , Hydroxymethylglutaryl-CoA Reductase Inhibitors/administration & dosage , Hypercholesterolemia/complications , Hypercholesterolemia/drug therapy , Stroke/drug therapy , Stroke/prevention & control , Adolescent , Adult , Aged , Aged, 80 and over , Black People , Brain/drug effects , Brain/metabolism , Brain/physiopathology , Brain Ischemia/mortality , Cerebral Arteries/drug effects , Cerebral Arteries/metabolism , Cerebral Arteries/physiopathology , Female , Humans , Hypercholesterolemia/physiopathology , Male , Middle Aged , Mortality/trends , Prospective Studies , Stroke/mortality , Treatment Outcome , White People
15.
Stroke ; 37(1): 44-9, 2006 Jan.
Article in English | MEDLINE | ID: mdl-16339479

ABSTRACT

BACKGROUND AND PURPOSE: Recent recommendations call for in-hospital initiation of lipid-lowering therapy (LLT) for most ischemic stroke (IS) and transient ischemic attack (TIA) survivors; however, little is known about actual use. This study describes use of and predictors for in-hospital lipid testing and LLT using data from a statewide stroke registry. METHODS: In 2002, the registry ascertained cases from a stratified sample of 16 hospitals. This study includes only IS and TIA cases discharged alive. RESULTS: In 1907 study subjects, 30.2% (27.2% to 33.5%) were on LLT at admission. In 1399 subjects not on LLT at admission, 37.2% (30.2% to 44.9%) underwent lipid testing, and 12.9% (7.2% to 22.1%) received LLT at discharge. Use of testing and LLT varied widely between hospitals (P<0.001). In-hospital lipid testing was positively associated with large teaching hospitals (P=0.029), and neurologist or neurosurgeon (P=0.004); and negatively associated with increasing age (P=0.002), being female (P=0.020), a previous medical history of atrial fibrillation (P=0.002), nonambulatory status (P=0.005), and poor prognosis (P<0.001). LLT at discharge was positively associated with a previous medical history of dyslipidemia (P<0.001), lipid testing (P=0.004), and elevated low-density lipoprotein levels (P<0.001). Among subjects who were not on LLT at admission but who had Adult Treatment Panel III-based indications for use of LLT, only 31.2% (20.5% to 44.5%) received LLT at discharge. CONCLUSIONS: Many hospitalized acute IS and TIA patients with indications for LLT are untreated at discharge. Efforts to close treatment gaps in lipid evaluation and treatment require sustained quality improvement efforts and should pay particular attention to high-risk patients.


Subject(s)
Ischemia/diagnosis , Ischemic Attack, Transient/diagnosis , Lipids/chemistry , Stroke/diagnosis , Stroke/epidemiology , Aged , Anticoagulants/therapeutic use , Cholestyramine Resin/therapeutic use , Clofibric Acid/therapeutic use , Female , Hospital Records , Hospitalization , Hospitals , Humans , Hydroxymethylglutaryl-CoA Reductase Inhibitors/therapeutic use , Ischemia/therapy , Ischemic Attack, Transient/therapy , Male , Middle Aged , Models, Statistical , Niacin/therapeutic use , Registries , Risk Factors , Stroke/therapy
16.
Jt Comm J Qual Patient Saf ; 32(9): 517-27, 2006 Sep.
Article in English | MEDLINE | ID: mdl-17987875

ABSTRACT

BACKGROUND: Michigan's prototype of the Paul Coverdell National Acute Stroke Registry revealed improvement opportunities in acute stroke care. METHODS: A partnership among the registry investigators, American Stroke Association (ASA), Michigan Department of Community Health, and 13 Michigan hospitals was implemented in 2004. The Institute for Healthcare Improvement Breakthrough Series model and the ASA's Get With The Guidelines-Stroke program and Patient Management Tool (PMT) were used to implement tailored stroke practice guidelines at each hospital. RESULTS: Significant improvements (p < .05) were observed for 5 of the 16 measures. Smoking cessation increased by 31%, dysphagia screening increased by 19%, use of the NIH stroke scale increased by 19%, documentation of reasons for not using recombinant tissue plasminogen activator (rt-PA) increased 13%, and documentation of dyslipidemia increased by 9%. DISCUSSION: Clinically and statistically significant improvements can be made in acute stroke care using a collaborative and systematic approach to QI that employs protocol utilization and ongoing data collection and review as part of an organized PMT.


Subject(s)
Diffusion of Innovation , Practice Guidelines as Topic/standards , Quality Assurance, Health Care/methods , Stroke/therapy , Total Quality Management/methods , Evidence-Based Medicine/standards , Humans , Michigan/epidemiology , Personnel, Hospital , Quality Assurance, Health Care/organization & administration , Quality Assurance, Health Care/standards , Registries , State Government , Stroke/epidemiology , Students, Nursing
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