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Psychopathology and Five-Year Roux-en-Y Gastric Bypass Outcomes in Bariatric Surgery Patients

Marek, Ryan Joseph
http://orcid.org/0000-0002-5658-0951
http://rave.ohiolink.edu/etdc/view?acc_num=kent1494581104591126

Abstract Details

2017, PHD, Kent State University, College of Arts and Sciences / Department of Psychological Sciences.
Although a number of studies have asserted that psychosocial factors contribute to suboptimal weight loss outcomes following bariatric surgery; research has been inconsistent regarding the associations between preoperative psychiatric diagnoses and psychological testing results and suboptimal weight loss. Research implies that psychopathology and personality are best capture by a hierarchical framework. The current investigation examined the utility of using the hierarchical model of psychopathology to predict 5-year Body Mass Index (BMI) outcomes. A total of 446 consecutively, locally residing consented patients who underwent a Roux-en-Y Gastric Bypass (RYGB) at least 5-years ago were included in the study. A majority were women (74.2%) and of Caucasian descent (66.2%). Patients’ mean pre-surgical BMI was 49.14 kg/m2 [Standard Deviation (SD) = 9.50 kg/m2]. Psychiatric diagnoses were obtained from a pre-surgical, semi-structured clinical interview and all participants were administered the MMPI-2-RF at their pre-surgical evaluations. BMIs were collected at 4 post-operative time points across a 5-year trajectory. Age significantly predicted the nonlinear rate of BMI-reduction across time, such that older individuals evidenced a slower rate of change over time. Pre-surgical levels of Externalizing and Low Positive Activation/Emotionality predicted higher BMIs at the 5-year outcome. Pre-operative indicators of psychopathology are important in predicting post-operative outcomes, particularly when they are dimensional in nature and aligned with the hierarchical model of psychopathology. A closer follow-up with patients who evidence pre-surgical problems, both before and after surgery, may help improve outcomes.
Yossef Ben-Porath (Committee Chair)
Manfred Dulmen (Committee Member)
John Gunstad (Committee Member)
Leslie Heinberg (Committee Member)
Susan Roxburgh (Committee Member)
Mary Anthony (Committee Member)
142 p.
Psychological Tests; Psychology; Public Health
Obesity; Bariatric Surgery; Weight Loss; MMPI; HiTOP; Outcome; Psychopathology; Personality; Treatment;

Recommended Citations

Citations

  • Marek, R. J. (2017). Psychopathology and Five-Year Roux-en-Y Gastric Bypass Outcomes in Bariatric Surgery Patients [Doctoral dissertation, Kent State University]. OhioLINK Electronic Theses and Dissertations Center. http://rave.ohiolink.edu/etdc/view?acc_num=kent1494581104591126

    APA Style (7th edition)

  • Marek, Ryan. Psychopathology and Five-Year Roux-en-Y Gastric Bypass Outcomes in Bariatric Surgery Patients. 2017. Kent State University, Doctoral dissertation. OhioLINK Electronic Theses and Dissertations Center, http://rave.ohiolink.edu/etdc/view?acc_num=kent1494581104591126.

    MLA Style (8th edition)

  • Marek, Ryan. "Psychopathology and Five-Year Roux-en-Y Gastric Bypass Outcomes in Bariatric Surgery Patients." Doctoral dissertation, Kent State University, 2017. http://rave.ohiolink.edu/etdc/view?acc_num=kent1494581104591126

    Chicago Manual of Style (17th edition)

kent1494581104591126
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© 2016, all rights reserved.
This open access ETD is published by Kent State University and OhioLINK.