A Discriminant Analysis of Factors Affecting Health Status among Patients After Coronary Artery Bypass Graft Surgery


  • Teepatad Chintapanyakun Faculty of Medicine Ramathibodi Hospital, Mahidol University
  • Noraluk Ua-Kit Faculty of Nursing, Chulalongkorn University


discriminant analysis of factors, health status, coronary artery bypass graft surgery


Background: Coronary artery bypass grafting (CABG) is one of the primary treatments for coronary artery disease (CAD) and is recognized as one of the most common surgical procedures. This surgery has an impact on the health status of patients who undergo it. Objective: This research aimed to assess CABG patient health status and examine related discriminating factors of health status. Method-Material: One hundred and twenty patients who had undergone CABG (both males and females) more than 18 years old were purposively recruited from the surgical and specialty clinics at Ramathibodi Hospital, Bangkok. Questionnaires collected demographic information and information on comorbidity, knowledge of disease and operation, and self-care behavior, and included questions of the short form-36 health survey (SF-36) questionnaire. Data were described/analyzed descriptively and through discriminant analysis. Results: The mean health status score by patients who had undergone CABG was good (x ̅ = 55.82, S.D. = 5.11). Variables that discriminated health status included age, NYHA-functional class, ejection fraction, comorbidity, knowledge of the disease, and self-care behavior. These variables predicted bad and good health status 93.3 and 96.7 percent of the time. On average, the equation of discriminate factors helped predict correct results 95.8 percent of the time. Conclusion: The discriminate factors identified can help in designing programs to develop knowledge and self-care behavior by patients who have undergone CABG.


Download data is not yet available.


Mozaffarian D, Benjamin EJ, Go AS, Arnett DK, Blaha MJ, & Cushman M, et al. Heart Disease and Stroke Statistics-2015 update: a report from the American Heart Association. JAHA. 2015; 131(4): 29-322.

Bureau of Policy and Strategy, Ministry of Public Health. Public health statistics B.E. 2557. Bangkok: The war veterans affairs office printing; 2015. (in Thai).

Naowapanich S. Caring of patients with acute coronary syndrome (ACS) after percutaneous coronary intervention (PCI). Bangkok: Faculty of Medicine Siriraj Hospital, Mahidol University; 2009. (in Thai).

Thongcharoen P, Laksanabunsong P. Coronary Artery Bypass Grafting (CABG). Bangkok: Faculty of Medicine Siriraj hospital, Mahidol University; 2007. (in Thai).

Chaiyaroj S. Coronary artery bypass surgery: CABG. In: Chaiyaroj S, editor. Essentials in Cardiothoracic Surgery. Bangkok: Idea instant printing; 2010. (in Thai).

Hardin SR, Kaplow R. Cardiac surgery essentials for critical care nursing. 2nd edition. Sudbury, MA: Jones and Bartlett Publishers; 2016.

Ware JE, Kosinski M, Dewey JE. Version 2 of the SF-36® Health Survey. Lincoln: Quality Metric Incorporated; 2003.

Lindsay GM, Hanlon P, Smith LN, Wheatley DJ. Assessment of changes in general health status using the short-form 36 questionnaire 1 year following coronary artery bypass grafting. European Journal Cardio-Thoracic Surgery. 2000; 18(5): 557-64.

Schulz P, Lottman DJ, Barkmeier TL, Zimmerman L, Barnason S, Hertzog M. Medications and associated symptoms/problems after coronary artery bypass surgery. Heart & Lung. 2011; 40(2): 130-8.

Hawkes AL, Nowak M, Bidstrup B, Speare R. Outcome of coronary artery bypass graft surgery. Vascular Health and Risk Management. 2006; 2(4): 477-84.

Kulawong V. Health status of patients recovering from coronary artery bypass graft. [M.N.S. Thesis in Nursing Science]. Bangkok: Mahidol University; 2006. (in Thai).

Gao F, Yao K, Tasi C, d Wang K. Predictors of health care needs in discharged patients who have undergone coronary artery bypass graft surgery. Heart & Lung. 2009; 38(3): 182-91.

Leeper B. Patients having repeat coronary artery bypass graft surgery. Critical Care Nursing Clinics of North America. 2007; 19(4): 461-6.

Khoueiry G, Flory M, Abi Rafeh N, Zgheib MH, Goldman M, Abdallah T, et al. Depression, disability, and quality of life after off-pump coronary artery bypass grafting: A prospective 9-month follow-up study. Heart & Lung. 2011; 40(3): 217-25.

LavdanitiM, Tsiligiri M, Palitzika D, Chrysomallis M, Marigo MD, Drosos G. Assessment of health status using sf-36 six months after coronary artery bypass grafting: A questionnaire survey. Health Science Journal. 2015; 9(1): 1-6.

Meleis AI. Transitions theory: middle-range and situation-specific theories in nursing research and practice. New York: Springer; 2010.

Allen JK. Physical and psychosocial outcome after coronary artery bypass graft surgery: review of the literature. Heart & Lung. 1990; 19(1): 49-54.

Nagendran J, Norris CM, Appoo JJ, Nagendran J. Left ventricular end-diastolic pressure predicts survival in coronary artery bypass graft surgery patients. The Annals of Thoracic Surgery. 2014; 97(4): 1343-7.

Nakon O. Factors associated with recovery of diabetic ischemic heart patients following coronary artery bypass grafting. [M.N.S. Thesis in Nursing Science]. Bangkok: Mahidol University; 2010. (in Thai).

Sanckamanee Y, Ruisungnoen W. Effects of preparatory information intervention on knowledge, anxiety, and self-care practice among patients underwent coronary artery bypass graft surgery. Journal of Nurses’ Association of Thailand, North-Eastern Division. 2012; 30(1): 15-21. (in Thai).

Thangrod R. Factors predicting health status in patients after infrainguinal bypass. [M.N.S. Thesis in Nursing Science]. Bangkok: Mahidol University; 2009. (in Thai).

Chintapanyakun T. Predicting factors of health status among patients after coronary artery bypass graft surgery. [M.N.S. Thesis in Nursing Science]. Bangkok: Chulalongkorn University; 2015. (in Thai).

Hair Jr. JF, Black WC, Babin BJ, Anderson RE. Multivariate data analysis. 7th edition. New Jersey: Pearson Prentice Hall; 2010.

Charlson ME, Pompei P, Ales KL, Mackenzie CR. A new method of classifying prognostic co-morbidity in longitudinal studies: Development and validation. Journal of Chronic Disability. 1987; 40(5): 373-83.

Urtritaprasit K. The relationship between recovery symptom and functional outcome in Thai CABG patients. [Dissertation Doctor of Philosophy]. Ohio: Case Western Reserve University; 2001.

Kanjanawasee S. Applied statistics for behavioral research. 6th edition. Bangkok: Chulalongkorn University Printing House; 2012. (in Thai).

Leurmarnkul W, Meetam P. Properties Testing of the Retranslated SF-36 (Thai Version). Thai Journal of Pharmaceutical Sciences. 2005; 29(1-2): 69-88. (in Thai).

Ware JE. SF-36 health survey update. SPINE. 2000; 25(24): 3130-9.

Barnason S, Zimmerman L, Anderson A, Mohr-Burt S, Nieveen J. Functional status outcome of patients with a coronary artery bypass graft over time. Heart & Lung. 2000; 29(1): 33-46.

Orem DE. Nursing concept of practice. St. Louis: Mosby; 2001.

Tawalbeh LI, Ahmad MM. The effect of cardiac education on knowledge and adherence to healthy lifestyle. Clinical Nursing Research. 2014; 23(3): 245-58.



How to Cite

Chintapanyakun, T., & Ua-Kit, N. (2017). A Discriminant Analysis of Factors Affecting Health Status among Patients After Coronary Artery Bypass Graft Surgery. Journal of Public Health Nursing, 31(3), 105–122. Retrieved from https://he01.tci-thaijo.org/index.php/phn/article/view/245483



Research Articles