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Beyond comorbidity: expanding the definition and measurement of complexity among older adults using administrative claims data.

Chrischilles E, Schneider K, Wilwert J, Lessman G, O'Donnell B, Gryzlak B, Wright K, Wallace R.

Med Care. 2014 Mar;52 Suppl 3:S75-84. doi: 10.1097/MLR.0000000000000026.


Transfer rates from nonprocedure hospitals after initial admission and outcomes among elderly patients with acute myocardial infarction.

Barreto-Filho JA, Wang Y, Rathore SS, Spatz ES, Ross JS, Curtis JP, Nallamothu BK, Normand SL, Krumholz HM.

JAMA Intern Med. 2014 Feb 1;174(2):213-22. doi: 10.1001/jamainternmed.2013.11944.


Racial disparities in the use of cardiac revascularization: does local hospital capacity matter?

Li S, Chen A, Mead K.

PLoS One. 2013 Jul 16;8(7):e69855. doi: 10.1371/journal.pone.0069855. Print 2013.


Use of stress testing and diagnostic catheterization after coronary stenting: association of site-level patterns with patient characteristics and outcomes in 247,052 Medicare beneficiaries.

Shah BR, McCoy LA, Federspiel JJ, Mudrick D, Cowper PA, Masoudi FA, Lytle BL, Green CL, Douglas PS.

J Am Coll Cardiol. 2013 Jul 30;62(5):439-46. doi: 10.1016/j.jacc.2013.02.093. Epub 2013 May 30.


Racial and ethnic disparities in the surgical treatment of acute myocardial infarction: the role of hospital and physician effects.

He D, Mellor JM, Jankowitz E.

Med Care Res Rev. 2013 Jun;70(3):287-309. doi: 10.1177/1077558712468490. Epub 2012 Dec 26.


Mental illness, access to hospitals with invasive cardiac services, and receipt of cardiac procedures by Medicare acute myocardial infarction patients.

Li Y, Glance LG, Lyness JM, Cram P, Cai X, Mukamel DB.

Health Serv Res. 2013 Jun;48(3):1076-95. doi: 10.1111/1475-6773.12010. Epub 2012 Nov 7.


Hospital strategies for reducing risk-standardized mortality rates in acute myocardial infarction.

Bradley EH, Curry LA, Spatz ES, Herrin J, Cherlin EJ, Curtis JP, Thompson JW, Ting HH, Wang Y, Krumholz HM.

Ann Intern Med. 2012 May 1;156(9):618-26. doi: 10.7326/0003-4819-156-9-201205010-00003.


Association of coronary CT angiography or stress testing with subsequent utilization and spending among Medicare beneficiaries.

Shreibati JB, Baker LC, Hlatky MA.

JAMA. 2011 Nov 16;306(19):2128-36. doi: 10.1001/jama.2011.1652.


Quality of care and patient outcomes in critical access rural hospitals.

Joynt KE, Harris Y, Orav EJ, Jha AK.

JAMA. 2011 Jul 6;306(1):45-52. doi: 10.1001/jama.2011.902.


Determinants of cardiac catheterization use in older Medicare patients with acute myocardial infarction.

Ko DT, Ross JS, Wang Y, Krumholz HM.

Circ Cardiovasc Qual Outcomes. 2010 Jan;3(1):54-62. doi: 10.1161/CIRCOUTCOMES.109.858456. Epub 2009 Dec 8.


Regional variation in cardiac catheterization appropriateness and baseline risk after acute myocardial infarction.

Ko DT, Wang Y, Alter DA, Curtis JP, Rathore SS, Stukel TA, Masoudi FA, Ross JS, Foody JM, Krumholz HM.

J Am Coll Cardiol. 2008 Feb 19;51(7):716-23. doi: 10.1016/j.jacc.2007.10.039.


Do hospitals provide lower quality care on weekends?

Becker DJ.

Health Serv Res. 2007 Aug;42(4):1589-612.


Do race-specific models explain disparities in treatments after acute myocardial infarction?

Jha AK, Staiger DO, Lucas FL, Chandra A.

Am Heart J. 2007 May;153(5):785-91.


Certificate of need regulation and cardiac catheterization appropriateness after acute myocardial infarction.

Ross JS, Ho V, Wang Y, Cha SS, Epstein AJ, Masoudi FA, Nallamothu BK, Krumholz HM.

Circulation. 2007 Feb 27;115(8):1012-9. Epub 2007 Feb 5.


Physician practice size and variations in treatments and outcomes: evidence from Medicare patients with AMI.

Ketcham JD, Baker LC, MacIsaac D.

Health Aff (Millwood). 2007 Jan-Feb;26(1):195-205.


Regional differences in process of care and outcomes for older acute myocardial infarction patients in the United States and Ontario, Canada.

Ko DT, Krumholz HM, Wang Y, Foody JM, Masoudi FA, Havranek EP, You JJ, Alter DA, Stukel TA, Newman AM, Tu JV.

Circulation. 2007 Jan 16;115(2):196-203. Epub 2006 Dec 26.


Delay in the diagnosis of acute myocardial infarction: effect on quality of care and its assessment.

Graff LG, Wang Y, Borkowski B, Tuozzo K, Foody JM, Krumholz HM, Radford MJ.

Acad Emerg Med. 2006 Sep;13(9):931-8. Epub 2006 Aug 7.

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