APPROACH Manuscripts

APPROACH began publishing peer-reviewed papers in April 2000, after having collected 5 years of data. The following is a list of citations for manuscripts published since then. Clicking on each title will lead to the manuscript's abstract.

2008

Ko DT, Donovan LR, Huynh T, Rinfret S, So DY, Love MP, Galbraith D, Tu JV; Canadian Cardiovascular Outcomes Research Team (CCORT). A survey of primary percutaneous coronary intervention for patients with ST segment elevation myocardial infarction in Canadian hospitals. Can J Cardiol. 2008 Nov;24(11):839-43.

Schmaltz HN, Southern DA, Maxwell CJ, Knudtson ML, Ghali WA; for the APPROACH Investigators. Patient Sex Does Not Modify Ejection Fraction as a Predictor of Death in Heart Failure: Insights from the APPROACH Cohort. J Gen Intern Med. 2008 Oct 2. [Epub ahead of print]

Gyenes GT, Ghali WA. Should all patients with asymptomatic but significant (>50%) left main coronary artery stenosis undergo surgical revascularization? Circulation. 2008 Jul 22;118(4):422-5. (Clinician update.)

Oreopoulos A, Padwal R, Kalantar-Zadeh K, Fonarow GS, Norris CM, McAlister FA. Body mass index and mortality in heart failure: a meta-analysis. Am Heart J 2008;156(1):13-22.

Norris CM, Hegadoren K, Patterson L, Pilote L. Sex differences in prodromal symptoms of patients with acute coronary syndrome: a pilot study. Prog Cardiovasc Nurs 2008;28(1):27-31.

Oreopoulos A, Padwal R, Norris CM, Mullen JC, Pretorius V, Kalantar-Zadeh K. Effect of obesity on short- and long-term mortality post-coronary revascularization: a meta-analysis . Obesity 2008;16(2);442-450.

Hubacek J, Kalla S, Galbraith PD, Graham MM, Knudtson ML, Ghali WA, for the APPROACH Investigators. Outcomes of revascularization strategies for two vessel coronary artery disease involving the proximal left anterior descending artery in an era of improved pharmacotherapy and stenting. Can J Cardiol 2008: 24(2);121-126.

Southern DA, Norris CM, Quan H, Shrive FM, Galbraith PD, Humphries K, Gao M, Knudtson ML, Ghali WA. An administrative data merging solution for dealing with missing data in a clinical registry: adaptation from ICD-9 to ICD-10. BMC Med Res Methodol. 2008 Jan 23; 8( 1): 1 .

Makowsky MJ, McAlister FA, Galbraith PD, Southern DA, Ghali WA, Knudtson ML, Tsuyuki, RT for the Alberta Provincial Program for Outcome Assessment in Coronary Heart Disease (APPROACH) Investigators. Lower extremity peripheral arterial disease in individuals with coronary artery disease: Prognostic importance, care gaps, and impact of therapy. Am Heart J 2008;155:348-55.

2007

Goldberg A, Southern DA, Galbraith PD, Traboulsi M, Knudtson ML, Ghali WA for the APPROACH Investigators. Coronary dominance and prognosis of patients with acute coronary syndrome. Am Heart J 2007 Dec;154:1116-22.

Patel AB, Waters NM, Ghali WA. Determining geographic areas and populations with timely access to cardiac catheterization facilities for acute myocardial infarction care in Alberta, Canada. Intl J Health Geog 2007 Oct 16; 6:47.

Bainey KR, Norris CM, Graham MM, Ghali WA, Knudtson ML, Welsh RC for the APPROACH Investigators. Clinical in-stent restenosis with bare metal stents: Is it truly a benign phenomenon? Intl Journal of Cardiology, 2008 Aug 29;128(3):378-82. online publication Aug 2007.

Worthley MI, Shrive FM, Anderson TJ, Traboulsi M. Prognostic Implication of Hyperglycemia in Myocardial Infarction and Primary Angioplasty.  Am J Med, 2007 Jul, Vol 120, Issue 7: 643.e1-643.e7.

Quan H, Galbraith PD, Norris CM, Southern DA, King K, Verhoef MJ, Knudtson ML, Ghali WA. Opinions on chelation therapy in patients undergoing coronary angiography: cross-sectional survey. Can J Cardiol. 2007 Jun;23(8):635-40.

McAlister FA, Oreopoulos A, Norris CM, Graham MM, Tsuyuki RT, Knudtson M, Ghali WA. Exploring the Treatment-Risk Paradox in Coronary Disease. Arch Intern Med. 2007 May 28;167(10):1019-1025.

Schmaltz HN, Southern D, Ghali WA, Jelinski SE, Parsons GA, King KM, Maxwell CJ. Living alone, patient sex and mortality after acute myocardial infarction. J Gen Intern Med. 2007 May;22(5):572-8.

Shrive FM, Tsuyuki RT. Bias in revascularization study. CMAJ. 2007 Apr 10;176(8):1125. Response to letter.

Ray JG, Norris CM, Udell JA, Tsuyuki RT, McAlister FA, Knudtson ML, Ghali WA. Lipid-lowering therapy and outcomes in heart failure. J Cardiovasc Pharmacol Ther. 2007 Mar;12(1):27-35.

Shrive FM, Ghali WA, Johnson JA, Donaldson C, Manns BJ. Use of the U.S. and U.K. scoring algorithm for the EuroQol-5D in an economic evaluation of cardiac care. Med Care. 2007 Mar;45(3):269-73.

Knudtson ML. Drug-eluting coronary stents: faith and hope, but no charity. CMAJ. 2007 Jan 16;176(2):195-6. No abstract available.

2006

Shrive FM, Stuart H, Quan H, Ghali WA. Dealing with missing data in a multi-question depression scale: a comparison of imputation methods. BMC Med Res Methodol. 2006 Dec 13;6:57.

Bagshaw SM, Galbraith PD, Mitchell LB, Sauve R, Exner DV, Ghali WA. Prophylactic amiodarone for prevention of atrial fibrillation after cardiac surgery: a meta-analysis. Ann Thorac Surg. 2006 Nov;82(5):1927-37.

Southern DA, Faris PD, Brant R, Galbraith PD, Norris CM, Knudtson ML, Ghali WA, for the APPROACH Investigators. Kaplan - Meier methods yielded misleading results in competing risk scenarios. J Clin Epidemiol 2006 Oct; 59(10):1110-4.

Tsuyuki RT, Shrive FM, Galbraith PD, Knudtson ML, Graham MM, for the APPROACH Investigators. Revascularization in Patients with Heart Failure. CMAJ 2006 Aug. 15; 175(4):361-5.

Knudtson, ML, Beanlands R, Brophy JM, Higginson L, Munt B, Rottger J on behalf of the Canadian Cardiovascular Society Access to Care Working Group. Treating the right patient at the right time: Access to specialist consultation and noninvasive testing. Can J Cardiol 2006 Aug;22(10):819-824.

Ross H, Howlett J, Arnold JM, Liu P, O'Neill BJ, Brophy JM, Simpson CS, Sholdice MM, Knudtson M, Ross DB, Rottger J, Glasgow K; Canadian Cardiovascular Society Access to Care Working Group. Treating the right patient at the right time: access to heart failure care. Can J Cardiol. 2006 Jul;22(9):749-54.

Graham MM, Knudtson ML, O'Neill BJ, Ross DB for the Canadian Cardiovascular Society Access to Care Working Group. Treating the right patient at the right time: Access to cardiac catheterization, percutaneous coronary intervention and cardiac surgery. Can J Cardiol 2006 July; 22(8): 679-683.

Graham MM, Norris CM, Galbraith PD, Knudtson ML, Ghali WA. Quality of life after coronary revascularization in the elderly. Eur Heart J 2006 July; 27(14):1690-8.

Gyenes G, Shrive FM, Graham MM, Ghali WA, Knudtson ML for the APPROACH Investigators. The Prognostic Importance of Nonsignificant Left Main Coronary Artery Disease in Patients Undergoing Percutaneous Coronary Intervention. J Am Coll Cardiol. 2006 Jul 18;48(2):276-80.

McAlister FA, Ghali WA, Gong Y, Fang J, Armstrong PW, Tu JV. Aspirin use and outcomes in a community-based cohort of 7352 patients discharged after first hospitalization for heart failure. Circulation. 2006 Jun 6;113(22):2572-8.

Hemmelgarn BR, Southern DA, Humphries KH, Culleton BF, Knudtson ML, Ghali WA for the APPROACH Investigators. Refined characterization of the association between kidney function and mortality in patients undergoing cardiac catheterization. Eur Heart J 2006 May;27(10):1191-7.

Norris CM, Ghali WA, Saunders LD, Brant R, Galbraith D, Faris P, Knudtson ML, for the APPROACH Investigators. Ordinal regression model and the linear regression model were superior to the logistic regression models. J Clin Epidemiol 2006 May; 59(5):448-56.

Ghali WA, Noseworthy TW . In search of 'truth' and standards for reporting cardiac procedure waiting times. Can J Cardiol. 2006 May 1;22(6):503-4. No abstract available.

Quan H, Wang F, Schopflocher D, Norris C, Galbraith PD, Faris P, Graham MM, Knudtson ML, and Ghali WA. Development and Validation of a Surname List to Define Chinese Ethnicity. Med Care. 2006 Apr;44(4):328-33.

Southern DA, Faris PD, Knudtson ML, Ghali, WA, for the APPROACH Investigators. Prognostic relevance of census-derived individual respondent incomes versus household incomes. Can J Public Health 2006 Mar-Apr; 97(2):114-7.

Hubacek J, Galbraith PD, Gao M, Humphries K, Graham MM, Knudtson ML, Ghali WA for the APPROACH Investigators. External validation of a percutaneous coronary
intervention mortality prediction model in patients with acute coronary syndromes. Am Heart J 2006 Feb;151:308-15.

Southern DA, Knudtson ML, Ghali, WA, for the APPROACH Investigators. Myocardial infarction on snow days: incidence, procedure use and outcomes. Can J Cardiol 2006 Jan; 22(1):59-61.

2005

Southern DA, McLaren L, Hawe P, Knudtson ML, Ghali WA, for the APPROACH Investigators. Individual-Level and Neighborhood-Level Income Measures: Agreement and Association With Outcomes in a Cardiac Disease Cohort. Med Care 2005 Nov; 43:1116–1122.

McLellan CS, Ghali WA, Labinaz M, Davis R, Galbraith D, Southern D, Shrive F, Knudtson ML, for the APPROACH Investigators. Association between completeness of percutaneous coronary revascularization and post-procedure outcomes. Am Heart J 2005 Oct; 150(4):800-806.

Alagiakrishnan K, Beitel JD, Graham MM, Southern DA, Knudtson ML, Ghali WA, Tsuyuki RT for the APPROACH Investigators. Relation of T-Axis Abnormalities to Coronary Artery Disease and Survival after Cardiac Catheterization. Am J Cardiol 2005 Sep 1; 96:639-642.

Shrive FM, Ghali WA, Lewis S, Donaldson C, Knudtson ML, Manns BJ. Moving beyond the cost per quality-adjusted life year: Modelling the budgetary impact and clinical outcomes associated with the use of sirolimus-eluting stents. Can J Cardiol 2005 Jul 9; 21(9): 783-787.

Graham MM, Ghali WA, Faris PD, Galbraith PD, Tu JV, Norris CM, Zentner A, Knudtson ML. Population rates of cardiac catheterization and yield of high-risk coronary artery disease. CMAJ 2005 Jul 5; 173 (1):35-39.

Humphries KH, Carere RG, Izadnegahdar M, Galbraith PD, Knudtson ML, Ghali WA. Cross-provincial use of cardiac services: The importance of data-sharing for clinical registries and outcomes research. Can J Cardiol 2005 Mar 1;21(3):267-272.

Shrive, FM, Manns BJ, Galbraith PD, Knudtson ML, Ghali WA; Economic evaluation of sirolimus-eluting stents. CMAJ 2005 Feb 1; 172 (3): 345-351.

Cornuz, J, Faris P, Galbraith PD; Knudtson ML, Ghali WA; Absence of bias against smokers in access to coronary revascularization after cardiac catheterization. Int J Qual Health Care 2005 Feb;17(1)37-42.

Larsen AI, Galbraith PD, Ghali WA, Norris CM, Graham MM, Knudtson ML. Characteristics and outcomes of patients with acute myocardial infarction and angiographically normal coronary arteries. Am J Cardiol 2005 Jan15; 95:261-263.

2004

Thompson CR, Humphries KH, Gao M, Galbraith PD, Norris C, Carere RG, Knudtson ML, Ghali WA (Canadian Cardiovascular Outcomes Research Team); Revascularization use and survival outcomes after cardiac catheterization in British Columbia and Alberta. Can J Cardiol. 2004 Dec14;20(14):1417-23.

Norris CM, Jensen LA, Galbraith PD, Graham MM, Daub WD, Knudtson ML, Ghali WA. Referral Rate and Outcomes of Cardiac Rehabilitation After Cardiac Catheterization in a Large Canadian City. Journal of Cardiopulmonary Rehabilitation 2004 Nov/Dec;24:392-400.

Ezekowitz J, McAlister FA, Humphries KH, Norris CM, Tonelli M, Ghali WA, Knudtson ML, for the APPROACH Investigators. The association between renal insufficiency, pharmacotherapy, and outcomes in 6,437 patients with heart failure and coronary artery disease. Journal of the American College of Cardiology. 2004 Oct19;44:1587-92.

Norris CM, Saunders LD, Ghali WA, Brant R, Galbraith PD, Graham M, Faris P, Dzavik V, Knudtson ML; Health-related quality of life outcomes of patients with coronary artery disease treated with cardiac surgery, percutaneous coronary intervention or medical management. Can J Cardiol. 2004 Oct 12;20(12):1259-66.

Hemmelgarn BR, Southern D, Culleton BF, Mitchell LB, Knudtson ML, Ghali WA for the APPROACH Investigators. Survival after coronary revascularization among patients with kidney disease. Circulation. 2004 Oct5;110:1890-95.

Appoo J, Norris C, Merali S, Graham MM, Koshal A, Knudtson ML, Ghali WA. Long-term outcome of isolated coronary artery bypass surgery in patients with severe left ventricular dysfunction. Circulation. 2004 Sept14;100(11 Suppl 1):II13-7.

Quan H, Ghali WA, Dean S, Norris CM, Galbraith PD, Faris PD, Graham MM, Knudtson ML. Validity of using surname to define Chinese ethnicity. Canadian Journal of Public Health 2004 Jul/Aug;95(4):314. (Letter to Editor)

Norris CM, Ghali WA, Galbraith PD, Graham MM, Jensen LA, Knudtson ML, for the APPROACH Investigators. Women with coronary artery disease report worse health-related quality of life outcomes compared to men. Health Qual Life Outcomes. 2004 May5;2(1):21.

Seidel JE, Ghali WA, Faris PD, Bow CJD, Waters NM, Graham MM, Galbraith PD, Mitchell LB, Knudtson ML for the APPROACH Investigators. Geographical location of residence and access to cardiac revascularization services. Can J Cardiol 2004 Apr 5; 20(5) :517-523.

Bow CJ, Waters NM, Faris PD, Seidel JD, Galbraith PD, Knudtson ML, Ghali WA for the APPROACH Investigators. Accuracy of city postal code coordinates as a proxy for location of residence. Int J Health Geogr 2004 Mar18; 3(1):5.

Faris PD, Grant FC, Galbraith PD, Gong Y, Ghali WA. Diagnostic cardiac catheterization and revascularization rates for coronary heart disease. Can J Cardiol. 2004 Mar 15;30(4):391-7.

Westerhout CM, Saunders LD, Kaul P, Armstrong PA, Knudtson ML, Ghali WA on behalf of the APPROACH Investigators. Interinstitutional variation in the use of abciximab for percutaneous coronary intervention. Can J Cardiol 2004 Mar 15;20(4):405-410.

King KM, Ghali WA, Faris PD, Curtis MJ, Galbraith PD, Graham MM, Knudtson ML. Sex differences in outcomes after cardiac catheterization: effect modification by treatment strategy and time. JAMA. 2004 Mar 10;291(10):1220-5.

Norris CM, Ghali WA, Saunders LD, Brant R, Galbraith PD. Systematic review of statistical methods used to analyze Seattle Angina Questionnaire scores. Can J Cardiol 2004 Feb2; 20(2):187-193.

2003

Graham MM, Ghali WA, Faris PD, Galbraith PD, Norris CM, Knudtson ML for the APPROACH Investigators. Sex differences in the prognostic importance of diabetes in patients with ischemic heart disease undergoing coronary angiography. Diabetes Care. 2003 Nov;26(11):3142-7.

Ghali WA, Donaldson CR, Knudtson ML, Lewis SJ, Maxwell CJ, Tu JV. Rising to the challenge: transforming care for ST-elevation myocardial infarction. CMAJ. 2003 Jul8;169:35-7. (Opinion piece)

Faris PD, Ghali WA, Brant R. Bias in estimates of confidence intervals for health outcome report cards. Journal of Clinical Epidemiology 2003 Jun;56:553-8.

2002

Southern DA, Ghali WA, Faris PD, Norris CM, Galbraith PD, Graham MM, Knudtson ML for the APPROACH Investigators. Misclassification of income quintiles derived from area-based measures: a comparison of enumeration area and forward sortation area. Can J Public Health 2002 Nov/Dec; 93(6):465-469.

Graham MM, Ghali WA, Faris PD, Galbraith PD, Norris CM and Merril Knudtson for the APPROACH Investigators. Survival after coronary revascularization in the elderly. Circulation 2002 May21;105(20):2378-84

Ghali WA, Faris PD, Galbraith PD, Norris CM, Curtis MJ, Saunders LD, Dzavik V, Mitchell LB, Knudtson ML. Sex differences in access to coronary revascularization after cardiac catheterization: importance of detailed clinical data. Ann Intern Med 2002 May21;136(10):723-32.

Faris PD, Ghali WA, Brant R, Norris CM, Galbraith PD, Knudtson ML for the APPROACH Investigators. Multiple imputation versus data enhancement for dealing with missing data in observational health care outcome analyses. J Clin Epidem 2002 Feb;55(2):184-191.

2001

Quan H, Ghali WA, Verhoef MJ, Norris CM, Galbraith PD, and Knudtson ML. Use of chelation therapy after coronary angiography. Am J Med 2001 Dec15;111(9):686-691.

Ghali WA, Graham MM. Evidence or faith? Coronary artery bypass surgery in the elderly. CMAJ 2001 Sep18;165:783-5. (Commentary)

Ghali WA, Quan H, Brant R, van Melle G, Norris CM, Faris PD and Knudtson ML for the APPROACH Investigators. A comparison of two methods for calculating adjusted survival curves from proportional hazards models. JAMA 2001 Sept26;286(12):1494-97.

Graham MM, Faris PD, Ghali WA, Galbraith PD, Norris CM, Badry JT, Mitchell LB, Curtis MJ and Knudtson ML for the APPROACH Investigators. Validation of three myocardial jeopardy scores in a population-based cardiac catheterization cohort. Am Heart J 2001 Aug; 142(2):254-61.

Dzavik V, Ghali WA, Norris CM, Mitchell B, Koshal A, Saunders DL, Galbraith PD, Hui W, Faris PD, Knudtson ML for the APPROACH Investigators. Long-term survival in 11,661 patients with multivessel disease coronary artery disease in an era of stenting: A report from APPROACH. Am Heart J 2001 Jul; 142(1):119-26.

Hemmelgarn BR, Ghali WA, Quan H, Brant R, Norris CM, Taub KJ, Knudtson ML. Poor long term survival after coronary angiography in patients with renal insufficiency. Am J Kidney Dis 2001 Jan;37(1):64-72.

2000

Ghali WA, Quan H, Norris CM, Dzavik V, Naylor CD, Mitchel LB, Brant R, Knudtson ML. Prognostic significance of diabetes as a predictor of survival after cardiac catheterization. Am J Med 2000 Nov;109(7):543-8.

Ghali WA, Knudtson ML for the APPROACH Investigators. Overview of 'APPROACH' the Alberta provincial project for outcome assessment in coronary heart disease. Can J Cardiol 2000 Oct10; 16(10):1225-1230.

Norris CM, Ghali WA, Knudtson ML, Saunders LD, Naylor CD. Dealing with missing data in observational health care outcome analysis. J Clin Epidemiol. 2000 Apr;53:377-383.