Uncorrected Proof Jundishapur J Health Sci. In Press(In Press):e90424. Published online 2019 April 16. doi: 10.5812/jjhs.90424. Brief Report The Relationship Between the Enneagram Personality Types and Health Responsibility in Patients with Substance Use Disorder; a Brief Report Mozhgan Saeidi 1 , Mohammad Mahdi Amiri 2 , Maryam Ahmadi 1 and Saeid Komasi 3, * 1 Cardiac Rehabilitation Center, Imam Ali Hospital, Kermanshah University of Medical Sciences, Kermanshah, Iran 2 Lifestyle Modification Research Center, Imam Reza Hospital, Kermanshah University of Medical Sciences, Kermanshah, Iran 3 Clinical Research Development Center, Imam Reza Hospital, Kermanshah University of Medical Sciences, Kermanshah, Iran * Corresponding author: Clinical Research Development Center, Imam Reza Hospital, Kermanshah University of Medical Sciences, Zakarya Razi Blvd., Kermanshah, Iran, Tel: +98-8334276299, Fax: +98-8334276299, Email: s_komasi63@yahoo.com Received 2019 February 07; Revised 2019 March 06; Accepted 2019 April 08. Abstract Objectives: The present study aimed at examining the relationship between the Enneagram personality types and health responsi- bility in patients with substance use disorder (SUD). Methods: The current cross sectional study was conducted on 68 patients with SUD referred to methadone maintenance treatment clinics in Kermanshah city, Western Iran, in September 2017. The Riso-Hudson Enneagram type indicator (RHETI) and subscale of health responsibility from the health promoting lifestyle profile (HPLP-II) were used for data gathering. The obtained data were analyzed using Pearson correlation and multiple linear regression analysis. Results: The mean ± SD age of the samples (100% male) was 39.4 ± 13.3 years. The obtained results showed a significant direct relationship between personality types 1 and 3 and health responsibility, while the same relationship was indirect for the personality type 4 (P < 0.05). Despite the inability of the three personality types in predicting health responsibility, the model generally could explain 12.5% of the variance in criterion variable. Conclusions: Probably, screening the personality patterns of patients with SUD using the Enneagram model can be useful to iden- tify vulnerable groups. Since SUD rehabilitation includes long-term formal nursing services, training should be focused on im- proved health responsibility among risk-taking personalities such as type 4. Keywords: Healthy Lifestyle, Personality, Rehabilitation Nursing, Substance Use Disorder 1. Background Substance use disorder (SUD) is a chronic, progressive, and destructive disease (1). The disorder is very common throughout the world (1). SUD is often accompanied by a long-term unhealthy lifestyle. In the primary preven- tion phase, the identification and screening of the person- ality variables related to adopting a healthy lifestyle may be effective in improving health-related quality of life and controlling the health threatening events. Thus, it is nec- essary to study the relationship between personality pat- terns defined in the form of new systems and components of health-promoting lifestyle such as health responsibility. Health responsibility, which is one of the components of a healthy lifestyle, involves individuals care for their own health and help with their own healthcare (2). Studies often focused on neo five-factor personal- ity model to investigate the relationship between per- sonality traits including extroversion/introversion, posi- tive/negative affect, neuroticism, and other components with addiction and utilized clinical tools such as the Millon clinical multiaxial inventory (MCMI) and the Minnesota multiphasic personality inventory (MMPI) (3, 4). The En- neagram personality system is among those personality models that are rarely used in this field, despite its effi- ciency and the fact that it can be easily quantified (5). Ac- cording to the Enneagram system, people are categorized into nine personality types and there is usually a dominant personality type for each individual. The personality types are: perfectionist, helper, achiever, individualist, observer, loyalist, enthusiast, challenger, and mediator (6). 2. Objectives Based on the considerations, the current study aimed at investigating the relationship between the Enneagram Copyright © 2019, Jundishapur Journal of Health Sciences. This is an open-access article distributed under the terms of the Creative Commons Attribution-NonCommercial 4.0 International License (http://creativecommons.org/licenses/by-nc/4.0/) which permits copy and redistribute the material just in noncommercial usages, provided the original work is properly cited.