Buprenorphine Maintenance Therapy Hinders Acute Pain Management in Trauma

This weekly compilation of articles appearing in recently released journals and newsletters includes:

• Articles funded by the Agency for Healthcare Research and Quality (AHRQ) or authored by AHRQ researchers.
• Articles mentioning or discussing AHRQ staff, activities, and publications/products.
• Articles related to AHRQ-funded Evidence-based Practice Centers.
• Articles related to the U.S. Preventive Services Task Force or Put Prevention into Practice program.
• Articles mentioning the National Healthcare Disparities Report and National Healthcare Quality Report.
• Other research using AHRQ data or products.

AHRQ-Funded/Authored Articles

American Surgeon
Harrington CJ, Zaydfudim V. Buprenorphine maintenance therapy hinders acute pain management in trauma. Am Surg 2010 Apr; 76(4):397-99. [Supported by Institutional National Research Service Award grant T32 HS13833.] Select to access the abstract.

Circulation
Alexander KP, Peterson ED. Minimizing the risks of anticoagulants and platelet inhibitors. Circulation 2010 May 4; 121(17):1960-70. [Supported by grant U18 HS16964.]

Circulation: Cardiovascular Interventions
Tsai TT, Ho M, Xu S, et al. Increased risk of bleeding in patients on clopidogrel therapy after drug-eluting stents implantation: insights from the HMO Research Network-Stent Registry (HMORN-Stent). Circ Cardiovasc Interv 2010 May 4. [Epub ahead of print. Supported by contract 290-05-0033I, task order 5, as part of the Developing Evidence to Inform Decisions about Effectiveness (DEcIDE) program.] Select to access the abstract.

Clinical Gastroenterology and Hepatology
Strate LL, Naumann CR. The role of colonoscopy and radiological procedures in the management of acute lower intestinal bleeding. Clin Gastroenterol Hepatol 2010 Apr; 8(4):333-43. [Supported by grant K08 HS14062 (to first author).] Select to access the abstract.

Health Economics
Hill SC, Miller GE. Health expenditure estimation and functional form: applications of the generalized gamma and extended estimating equations models. Health Econ 2010 May; 19(5):608-27. [Authors are researchers in AHRQ's Center for Financing, Access, and Cost Trends; uses 1996-2003 Medical Expenditure Panel Survey (MEPS) data, citing AHRQ publications, Design and Methods of the Medical Expenditure Panel Survey Household Component, MEPS Methodology Report No. 1, 1997, and Sample Design of the 1997 Medical Expenditure Panel Survey Household Component, MEPS Methodology Report No. 11, 2000; acknowledges receipt of advice on replicate sampling from Robert Baskin (researcher in AHRQ's Center for Financing, Access, and Cost Trends).] Select to access the abstract.

JAMA
Hernandez AF, Greiner MA, Fonarow GC, et al. Relationship between early physician follow-up and 30-day readmission among Medicare beneficiaries hospitalized for heart failure. JAMA 2010 May 5; 303(17):1716-22. [Supported in part by grant U18 HS16964 to seventh (Peterson) and eighth (Curtis) authors.] Select to access the abstract.

Journal of Acquired Immune Deficiency Syndromes
Bachhuber M, Bilker WB, Wang H, et al. Is antiretroviral therapy adherence substantially worse on weekends than weekdays? J Acquir Immune Defic Syndr 2010 May 1; 54(1):109-10. [Supported in part by Centers for Education and Research on Therapeutics (CERTs) cooperative agreement grant HS10399.]

Journal of the American College of Cardiology
Peterson ED, Dai D, DeLong ER, et al. Contemporary mortality risk prediction for percutaneous coronary intervention: results from 588,398 procedures in the National Cardiovascular Data Registry. J Am Coll Cardiol 2010 May 4; 55(18):1923-32. [Supported by grant U18 HS16964.] Select to access the abstract.

Journal of the American Medical Informatics Association
Kahn JS, Hilton JF, Nunnery TV, et al. Personal health records in a public hospital: experience at the HIV/AIDS clinic at San Francisco General Hospital. J Am Med Inform Assoc 2010 Mar 1; 17(2):224-8. [Supported by grant R18 HS17784-01 (to first author).] Select to access the abstract.

Journal of Extra-Corporeal Technology
Groom RC, Quinn RD, Lennon P, et al. Microemboli from cardiopulmonary bypass are associated with a serum marker of brain injury. J Extra Corpor Technol 2010 Mar; 42(1):40-4. [Supported by grant 1 K02 HS15663-01A1.] Select to access the abstract/

Journal of General Internal Medicine
Christensen AJ, Howren MB, Hillis SL, et al. Patient and physician beliefs about control over health: association of symmetrical beliefs with medication regimen adherence. J Gen Intern Med 2010 May; 25(5):397-402. [Supported in part by CERTs grant 5 U18 HS16094.] Select to access the abstract.

Jolly S, Kao C, Bindman AB, et al. Cardiac procedures among American Indians and Alaska Natives compared to non-Hispanic whites hospitalized with ischemic heart disease in California. J Gen Intern Med 2010 May; 25(5):430-4. [Supported in part by Indian Health Service grant U26 IHS30000-8A, co-funded by AHRQ (to second and last [Korenbrot] authors; uses California patient discharge database data (part of AHRQ's Healthcare Cost and Utilization Project (HCUP) State Inpatient Databases (SID)) for 1998-2002 and AHRQ's Elixhauser comorbidity measures (Elixhauser et al., Med Care, 1998).] Select to access the abstract.

Gleason KM, McDaniel MR, Feinglass J, et al. Results of the Medications At Transitions and Clinical Handoffs (MATCH) study: an analysis of medication reconciliation errors and risk factors at hospital admission. J Gen Intern Med 2010 May; 25(5):441-7. [Supported in part by grant 5 U18 HS15886; acknowledges presentations of portions of this work at the AHRQ 2007 Annual Conference; cites AHRQ Evidence Report/Technology Assessment, Literacy and Health Outcomes, 2004, and AHRQ publication, Medical Informatics Case and Commentary: “Electronic Err”, 2005, as published on AHRQ's WebM&M: Morbidity and Mortality Rounds on the Web (MMRW).] Select to access the abstract.

Meltzer DO, Chung JW. U.S. trends in hospitalization and generalist physician workforce and the emergence of hospitalists. J Gen Intern Med 2010 May; 25(5):453-9. [Supported in part by Hospital Medicine and Economics CERTs grant U18 HS16967-01 (first author is principle investigator).] Select to access the abstract.

Medical Care
Stone PW, Glied SA, McNair PD, et al. CMS changes in reimbursement for HAIs: setting a research agenda. Med Care 2010 May; 48(5):433-9. [Supported in part by grant R01 HS18099.] Select to access the abstract.

Glance LG, Dick AW, Mukamel DB, et al. How well do hospital mortality rates reported in the New York State CABG report card predict subsequent hospital performance? Med Care 2010 May; 48(5):466-71. [Supported by grant R01 HS16737.] Select to access the abstract.

New EnglandJournal of Medicine
Poon EG, Keohane CA, Yoon CS, et al. Effect of bar-code technology on the safety of medication administration. N Engl J Med 2010 May 6; 362(18):1698-1707. [Supported by grant HS14053-02.] Select to access the abstract.

Social Science and Medicine
Lambert BL, Dickey LW, Fisher WM, et al. Listen carefully: the risk of error in spoken medication orders. Soc Sci Med 2010 May; 70(10):1599-1608. [Supported in part by grant 1 R01 HS11609.] Select to access the abstract.

AHRQ-Related Articles

Academic Medicine
Kalet AL, Gillespie CC, Schwartz MD, et al. New measures to establish the evidence base for medical education: identifying educationally sensitive patient outcomes. Acad Med 2010 May; 85(5):844-51. [Notes that ambulatory care sensitive conditions "are now established benchmarks of primary care quality," citing AHRQ publication, AHRQ Quality Indicators Guide to Prevention Quality Indicators: Hospital Admission for Ambulatory Care Sensitive Conditions, Version 3.1, 2007.] Select to access the abstract.

American Family Physician
Nau KC, Lorenzetti RC, Cucuzzella M, et al. Glycemic control in hospitalized patients not in intensive care: beyond sliding-scale insulin. Am Fam Physician 2010 May 1; 81(9):1130-5. [Cites HCUP data on diabetes, as published on AHRQ's HCUPnet Website.] Select to access the abstract.

American Journal of Epidemiology
Chen J, Heyse JF, Heaton P, et al. Age dependence of the risk of intussusception following tetravalent rhesus-human reassortant rotavirus tetravalent vaccine: is it beyond doubt? Am J Epidemiol 2010 May 1; 171(9):1046-54. [Cites AHRQ-authored articles by Simonsen, Viboud, Elixhauser (researcher in AHRQ's Center for Delivery, Organization, and Markets) et al. (J Infect Dis, 2005) and Simonsen, Taylor, Elixhauser et al. (J Infect Dis, 2006).] Select to access the abstract.

American Journal of Preventive Medicine
Swan GE, McClure JB, Jack LM, et al. Behavioral counseling and varenicline treatment for smoking cessation. Am J Prev Med 2010 May; 38(5):482-90. [Cites AHRQ-sponsored guideline, Treating Tobacco Use and Dependence: 2008 Update, 2008.] Select to access the abstract.

Annals of Internal Medicine
Meinhardt U, Nelson AE, Hansen JL, et al. The effects of growth hormone on body composition and physical performance in recreational athletes: a randomized trial. Ann Intern Med 2010 May 4; 152(9):568-77. [Cites AHRQ-funded article by Liu et al. (Ann Intern Med, 2008).] Select to access the abstract.

Archives of Internal Medicine
Yeh RW, Go AS. Rethinking the epidemiology of acute myocardial infarction: challenges and opportunities. Arch Intern Med 2010 May 10; 170(9):759-64. [Cites AHRQ-funded article by Bradley et al. (JAMA, 2004).] Select to access the abstract.

Gray SL, LaCroix AZ, Larson J, et al. Proton pump inhibitor use, hip fracture, and change in bone mineral density in postmenopausal women: results from the Women's Health Initiative. Arch Intern Med 2010 May 10; 170(9):765-71. [Cites AHRQ-funded article by Ware and Sherbourne (Med Care, 1992).] Select to access the abstract.

Yachimski PS, Farrell EA, Hunt DP, et al. Proton pump inhibitors for prophylaxis of nosocomial upper gastrointestinal tract bleeding: effect of standardized guidelines on prescribing practice. Arch Intern Med 2010 May 10; 170(9):779-83. [Cites AHRQ-funded article by Ho et al. (JAMA, 2009).] Select to access the abstract.

Bravata DM, Wells CK, Lo AC, et al. Processes of care associated with acute stroke outcomes. Arch Intern Med 2010 May 10; 170(9):804-10. [Cites AHRQ publication, Hospitalization in the United States, 1997, HCUP Fact Book No. 1, 2000.] Select to access the abstract.

Schwamm LH. Measure for measure: new insights offered and challenges encountered in the efforts to improve acute stroke care. Arch Intern Med 2010 May 10; 170(9):810-12. [Comments on above article and cites AHRQ-funded article by Arbogast et al. (Epidemiology, 2008).]

Cheng CM, Guglielmo BJ, Maselli J, et al. Coverage of FDA medication boxed warnings in commonly used drug information resources. Arch Intern Med 2010 May 10; 170(9):831-3. [Cites AHRQ-funded article by Wagner et al. (Pharmacoepidemiol Drug Saf, 2006).]

British Medical Journal
Lilford R, Pronovost P. Using hospital mortality rates to judge hospital performance: a bad idea that just won't go away. BMJ 2010 May 1; 340(7753):955-7. [Cites AHRQ-funded article by Pronovost et al. (BMJ, 2010).]

Infection Control and Hospital Epidemiology
Restrepo MI, Anzueto A, Arroliga AC, et al. Economic burden of ventilator-associated pneumonia based on total resource utilization. Infect Control Hosp Epidemiol 2010 May; 31(5):509-15. [Cites AHRQ publication, HCUP Facts and Figures: Statistics on Hospital-based Care in the United States, 2007, 2009, as published on AHRQ Web site.] Select to access the abstract.

Internal Medicine News
Fanciullo GJ, Ballantyne JC, Barkin RL. Therapeutic options for optimal analgesia. Intern Med News 2010 Apr 15; 43(7 Suppl):1-11, post-test questions. [Published in CME-certified supplement, Practical Perspectives for the Frontline Clinician: Long-Term Opioid Therapy in Chronic Noncancer Pain; cites findings from AHRQ-funded article by Cherkin et al. (N Engl J Med, 1998) that "education alone provided almost as much benefit as did physical therapy or chiropractic manipulation."]

JAMA
van der Windt DA, Jellema P, Mulder CJ, et al. Diagnostic testing for celiac disease among patients with abdominal symptoms: a systematic review. JAMA 2010 May 5; 303(17):1738-46. [Cites World Gastroenterology Organisation Practice guideline on celiac disease, 2007, as posted on AHRQ's National Guideline Clearinghouse™ Web site.] Select to access the abstract.

Journal of General Internal Medicine
Studdert DM, Mello MM, Brennan TA. Defensive medicine and tort reform: a wide view. J Gen Intern Med 2010 May; 25(5):380-1. [Cites AHRQ-funded articles by Pronovost et al. (N Engl J Med, 2006) and Studdert et al. (N Engl J Med, 2006).]

Sorkin DH, Ngo-Metzger Q, De Alba I. Racial/ethnic discrimination in health care: impact on perceived quality of care. J Gen Intern Med 2010 May; 25(5):390-6. [Cites article by Morales et al. (Health Serv Res, 2001), using AHRQ's Consumer Assessment of Health Providers and Systems (CAHPS®) data; cites AHRQ-funded articles by Murray-Garcia et al. (Med Care, 2000), Weech-Maldonado et al. (Health Serv Res, 2003), and Ngo-Metzger et al. (J Gen Intern Med, 2007).] Select to access the abstract.

Medical Care
Weiss M, Yakusheva O, Bobay K. Nurse and patient perceptions of discharge readiness in relation to postdischarge utilization. Med Care 2010 May; 48(5):482-6. [Cites AHRQ-authored article by Friedman and Basu (researchers in AHRQ's Center for Delivery, Organizations, and Markets and Center for Primary Care, Prevention, and Clinical Partnerships, respectively) (Med Care Res Rev, 2004); cites AHRQ-funded article by Novotny and Anderson (Nurs Res, 2008).] Select to access the abstract.

New England Journal of Medicine
Stone GW, Rizvi A, Newman W, et al. Everolimus-eluting versus paclitaxel-eluting stents in coronary artery disease. N Engl J Med 2010 May 6; 362(18):1663-74. [Cites AHRQ-funded article by Eisenstein et al. (JAMA, 2007).] Select to access the abstract.

Obstetrics & Gynecology
Strunk AL, Queenan JT. Beyond negligence: administrative compensation for adverse medical outcomes. Obstet Gynecol 2010 May; 115(5):896-903. [Cites AHRQ-funded article by Studdert et al. (N Engl J Med, 2006).] Select to access the abstract.

Merien AE, van de Ven J, Mol BW, et al. Multidisciplinary team training in a simulation setting for acute obstetric emergencies. Obstet Gynecol 2010 May; 115(5):1021-31. Mentions recommendations from AHRQ and the Institute of Medicine to improve patient safety through the introduction of crew resource management in health care; cites article by Gaba, "What does simulation add to team work training?" as posted on AHRQ's Web M&M Web site.] Select to access the abstract.

Quality Management in Health Care
Frith KH, Anderson EF, Caspers B, et al. Effects of nurse staffing on hospital-acquired conditions and length of stay in community hospitals. Qual Manag Health Care 2010 Apr-Jun; 19(2):147-55. [Cites AHRQ-authored article by Hughes and Clancy (former AHRQ researcher and AHRQ director, respectively) (J Nurs Care Qual, 2005), AHRQ-funded article by Needleman et al. (N Engl J Med, 2002), data on pressure ulcer rates for hospitalized patients from AHRQ's HCUPnet Web site, and AHRQ publication, Hospital Nursing Staffing and Quality of Care. Research in Action, 2004.] Select to access the abstract.

Okuyama A, Sasaki M, Kanda K. The relationship between incident reporting by nurses and safety management in hospitals. Qual Manag Health Care 2010 Apr-Jun; 19(2):164-72. [Cites AHRQ publication, Hospital Survey on Patient Safety Culture, 2004.] Select to access the abstract.

U.S. Preventive Services Task Force (USPSTF)/Put Prevention Into Practice (PPIP)-Related Articles

Academic Medicine
Prasad V. Perspective: beyond storytelling in medicine: an encounter-based curriculum. Acad Med 2010 May; 85(5):794-8. [Cites USPSTF updated recommendations on screening for breast cancer (Ann Intern Med, 2009), in response to the question, "When are guidelines ironclad, and when might they be reversed?"] Select to access the abstract.

American Family Physician
Wilkins T, Reynolds PL. Performing digital rectal examination can detect cancers. Am Fam Physician 2010 May 1; 81(9):1073-6. [Response to letters cites USPSTF recommendations on screening for colorectal cancer (Ann Intern Med, 2002) and associated USPSTF-sponsored systematic review on cost effectiveness analyses of colorectal cancer screening (Ann Intern Med, 2002).]

CME quiz. Am Fam Physician 2010 May 1; 81(9):1087-9. [Uses USPSTF recommendation statement, Behavioral Counseling in Primary Care to Promote a Health Diet, as published on AHRQ Web site and cited in article by Kelly below, as the basis for the second question.]

Kelly RB. Diet and exercise in the management of hyperlipidemia. Am Fam Physician 2010 May 1; 81(9):1097-1102. [Cites USPSTF recommendation statement, Behavioral Counseling in Primary Care to Promote a Health Diet, as published on AHRQ Web site.] abstract.

American Journal of Preventive Medicine
Jones RM, Woolf SH, Cunningham TD, et al. The relative importance of patient-reported barriers to colorectal cancer screening. Am J Prev Med 2010 May; 38(5):499-507. [Cites USPSTF recommendations on screening for colorectal cancer (Ann Intern Med, 2008).] Select to access the abstract.

Jones RM, Devers KJ, Kuzel AJ, et al. Patient-reported barriers to colorectal cancer screening: a mixed-methods analysis. Am J Prev Med 2010 May; 38(5):508-16. [Second author is former AHRQ researcher; cites USPSTF recommendations on screening for colorectal cancer (Ann Intern Med, 2008).] Select to access the abstract.

Annals of Internal Medicine
Correction: In the clinic: breast cancer screening and prevention. Ann Intern Med 2010 May 4; 152(9):620. [Corrects errors in article by Nattinger (Ann Intern Med, 2010) which cites USPSTF recommendations on screening for breast cancer and associated evidence review (Ann Intern Med, 2009).]

Fancher TL, Kravitz RL. In the clinic: depression. Ann Intern Med 2010 May 4; 152(9):ITC51-ITC515; quiz, ITC5-16. [Discusses and cites USPSTF-sponsored evidence summary on screening for depression in adults (Ann Intern Med, 2002) and its 2009 update; cites AHRQ-sponsored guideline, Depression in Primary Care: Detection, Diagnosis, and Treatment, 1993 (archived) and evidence report summary (Williams et al., Ann Intern Med, 2000) of AHRQ Evidence Report/Technology Assessment, Treatment of Depression: Newer Pharmacotherapies, 1999; mentions USPSTF recommendation statements Screening for Depression in Adults, 2009, and Screening for Suicide Risk, 2004, as published on AHRQ Web site, and notes that the MacArthur Initiative in Depression and Primary Care has expanded AHRQ's work by developing "a comprehensive Web site that offers provider guidelines and patient education resources..."] Select to access the abstract.

Journal of General Internal Medicine
Jay M, Schlair S, Caldwell R, et al. From the patient's perspective: the impact of training on resident physician's obesity counseling. J Gen Intern Med 2010 May; 25(5):415-22. [Cites USPSTF recommendations on screening for obesity in adults (Ann Intern Med, 2003) and USPSTF-sponsored evidence review on primary care behavioral counseling interventions (Am J Prev Med, 2002) Select to access the abstract.

Price-Haywood EG, Roth KG, Shelby K, et al. Cancer risk communication with low health literacy patients: a continuing medical education program. J Gen Intern Med 2010 May; 25 Suppl 2:S126-S129. [Cites USPTF-sponsored article by Sheridan, Harris, and Woolf (Am J Prev Med, 2004) on shared decision making about screening and chemoprevention.] Select to access the abstract.

Journal of the National Cancer Institute
Esserman L, Thompson I. Solving the overdiagnosis dilemma. J Natl Cancer Inst 2010 May 5; 102(9):582-3. [Cites USPSTF recommendations on screening for breast cancer and associated patient summary (Ann Intern Med, 2009); comments on article by Welch and Black cited below.]

Welch HG, Black WC. Overdiagnosis in cancer. J Natl Cancer Inst 2010 May 5; 102(9):605-13. [Cites USPSTF publication, Effectiveness of Mammography in Reducing Breast Cancer Mortality (giving inactive AHRQ Web site address) as a source for the finding that one 50-year-old woman will avoid a breast cancer death with screening mammography.] Select to access the abstract.

Obstetrics & Gynecology
Screening mammography for women 40-49 years old. Obstet Gynecol 2010 May; 115(5):1083-4. [Summarizes USPSTF findings and updated recommendations on screening for breast cancer (Ann Intern Med, 2009), and associated evidence update and related research article.]

American College of Obstetricians and Gynecologists. Emergency contraception. Obstet Gynecol 2010 May; 115(5):1100-9. [Uses USPSTF evidence rating methodologies to review and evaluate quality of selected studies.]

Evidence-based Practice Centers-Related Articles

American Family Physician
Moon JT. Effectiveness of medications to prevent primary breast cancer. Am Fam Physician 2010 May 1; 81(9):1149. [Reviews and summarizes systematic review on the comparative effectiveness of medications to reduce risk for primary breast cancer (Nelson et al., Ann Intern Med, 2009), conducted by the Oregon Health & Sciences University Evidence-based Practice Center.]

Journal of General Internal Medicine
Glick SB, Fernandez L, Irby DM, et al. Teaching about health care disparities in the clinical setting. J Gen Intern Med 2010 May; 25 Suppl 2:S95-S101. [Cites AHRQ's NHDR, 2008; cites AHRQ Evidence Report/Technology Assessment, Literacy and Health Outcomes, 2004 (as prepared by RTI International/University of North Carolina Evidence-based Practice Center).] Select to access the abstract.

Obstetrics & Gynecology
Bujold E, Gauthier RJ. Risk of uterine rupture associated with an interdelivery interval between 18 and 24 months. Obstet Gynecol 2010 May; 115(5):1003-6. [Cites AHRQ-funded systematic review of the incidence and consequences of uterine rupture in women with previous caesarean section (Guise et al., BMJ, 2004), conducted by the Oregon Health & Science University Evidence-based Practice Center.] Select to access the abstract.

Research by Others Using AHRQ Data or Products

American Journal of Preventive Medicine
Coben JH, Davis SM, Furbee PM, et al. Hospitalizations for poisoning by prescription opioids, sedatives, and tranquilizers. Am J Prev Med 2010 May; 38(5):517-24. [Uses 1999-2006 HCUP Nationwide Inpatient Sample (NIS) data, citing Overview of the Nationwide Inpatient Sample and Nationwide Inpatient Sample Trends Supplemental (NIS-Trends) Files on AHRQ's HCUP Web site; cites AHRQ-authored articles by Coben and Steiner (researcher in AHRQ's Center for Delivery, Organization, and Markets) (Am J Prev Med, 2003, and Inj Prev, 2006), using various HCUP data sets.] Select to access the abstract.

Archives of Internal Medicine
Howell MD, Novack V, Grgurich P, et al. Iatrogenic gastric acid suppression and the risk of nosocomial Clostridium difficile infection. Arch Intern Med 2010 May 10; 170(9):784-90. [Uses and cites AHRQ's Elixhauser comorbidity measures (Elixhauser et al., Med Care, 1998); cites AHRQ publication, Introduction to the HCUP Nationwide Inpatient Sample (NIS), 2007, 2009, as published on AHRQ's HCUP Web site.] Select to access the abstract.

Journal of the National Cancer Institute
Dahm CC, Keogh RH, Spencer EA, et al. Dietary fiber and colorectal cancer risk: a nested case-control study using food diaries. J Natl Cancer Inst 2010 May 5; 102(9): 614-26. [Uses study cohort data from the Whitehall II study, previously funded by AHRQ; cites articles by Marmot and Brunner (Int J Epidemiol, 2005) and Brunner, Wunsch, and Marmot (Int J Obes Relat Metab Disord, 2001), both using study cohort data from the Whitehall II study.] Select to access the abstract.

Medical Care
Srinivas SK, Epstein AJ, Nicholson S, et al. Improvements in US maternal obstetrical outcomes from 1992 to 2006. Med Care 2010 May; 48(5):487-93. [Uses 1997-2006 HCUP NIS data, citing Overview of the Nationwide Inpatient Sample on AHRQ's HCUP Web site; cites AHRQ-authored article by Steiner, Elixhauser, and Schnaier (researchers in AHRQ's Center for Delivery, Organization, and Markets) (Eff Clin Pract, 2002), using various HCUP data sets.] Select to access the abstract.