Six-year postoperative associations between the Minnesota Multiphasic Personality Inventory - 3 (MMPI-3) and weight recurrence, eating behaviors, adherence, alcohol misuse, and quality of life.

BACKGROUND: Metabolic and bariatric surgery (MBS) leads to beneficial and sustained outcomes. However, many patients evidence weight recurrence and psychosocial functioning may be associated with weight recurrence. The Minnesota Multiphasic Personality Inventory - 3 (MMPI-3) is validated for use in presurgical MBS evaluations and likely has clinical utility in understanding weight recurrence and other aspects of postoperative functioning.

OBJECTIVE: The objective of the current investigation is to understand how postoperative psychosocial functioning relates to weight recurrence and other behaviors and constructs 6 years after MBS.

SETTING: Cleveland Clinic Bariatric and Metabolic Institute.

METHODS: A sample of 163 participants consented to take a battery of self-report measures related to psychological functioning, eating behaviors, adherence, alcohol misuse, and quality of life along with their postoperative weight. MMPI-3 scale scores were prorated from the Minnesota Multiphasic Personality Inventory - 2 - Restructured Form (MMPI-2-RF) or scored from the Minnesota Multiphasic Personality Inventory - 2 - Restructured Form - Expanded (MMPI-2-RF-EX).

RESULTS: Weight recurrence was quite variable in this sample. Postoperative MMPI-3 scales related to emotional/internalizing dysfunction were modestly associated with higher weight recurrence. Postoperative MMPI-3 scale scores also demonstrated associations with other postoperative outcomes including measures of eating behaviors, adherence, alcohol misuse, and quality of life.

CONCLUSIONS: Postoperative psychosocial functioning as assessed by the MMPI-3 was associated with weight recurrence and a number of other problematic psychological outcomes beyond weight recurrence.