A Causal Model of Illness Perception and Change of Lifestyle Behaviors on Blood Pressure in Thais with Hypertension


  • Sirirat Leelacharas Ramathibodi School of Nursing, Faculty of Medicine Ramathibodi Hospital, Mahidol University
  • Petcharat Kerdonfag Ramathibodi School of Nursing, Faculty of Medicine Ramathibodi Hospital, Mahidol University.
  • Sageemas Na Wichian College of Industrial Technology, King Mongkut’s University of Technology North Bangkok


Illness perception, Hypertension, Thailand


        Currently, a causal model between Illness perceptions and lifestyle modifications on blood pressure in Thais with hypertension in normal circumstance had not been examined. This study aimed to examine the direct and indirect effects of illness perception, lifestyle modification, and involved factors on systolic (model 1) and diastolic (model 2) blood pressures, using available data from a previous study conducted in 2015 among 660 Thais with hypertension from 4 Bangkok Public Health Centers and 2 primary care units. Data were analyzed using descriptive and path analyses. The results showed that both model 1 or systolic blood pressure model (Chi-square= 31.86, df= 35, p-value=0.620, RMSEA= 0.000, CFI=1.00, and GFI= 0.99) and model 2 or diastolic blood pressure model (Chi-square= 39.46, df= 35, p-value=0.277, RMSEA= 0.014, CFI=1.00, and GFI= 0.99) fitted with the evidence-based data. There were direct effects of illness perception with systolic and diastolic blood pressures. More exercise benefited with lowering systolic but not for diastolic blood pressures. Medication compliance benefited with lowering systolic and diastolic blood pressures. There was a difference between genders on diastolic blood pressure. This study indicated that Illness perception, exercise, and medication compliance were important for controlling high blood pressures      


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Author Biography

Sirirat Leelacharas, Ramathibodi School of Nursing, Faculty of Medicine Ramathibodi Hospital, Mahidol University

Sirirat Leelacharas earned her master and doctoral degrees from University of Michigan, Ann Arbor, USA.  She has been working as a nursing faculty member of Ramathibodi School of Nursing for more than 10 years.  Her area of expertise is medical nursing focusing on acute care nursing specific to cardiovascular, pulmonary, and neurological nursing.  Her research areas are hypertension, adherence to medication-taking, and illness perceptions to acute and chronic illnesses.


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How to Cite

Leelacharas ส., Kerdonfag เ., & Na Wichian ศ. . (2021). A Causal Model of Illness Perception and Change of Lifestyle Behaviors on Blood Pressure in Thais with Hypertension. Journal of Public Health Nursing, 35(3), 1–16. Retrieved from https://he01.tci-thaijo.org/index.php/phn/article/view/251008