Psychosocial presentation of revisional and primary bariatric surgery patients

The research program outlined in this thesis has focused on identifying the causes of weight-loss failure for primary, revisional and multiple revisional bariatric-surgery patients. Phase One comprised of two qualitative studies and informed Phase Two, a quantitative longitudinal study. The research examined the patients' psychosocial functioning and their perceptions of psychosocial factors that had contributed to these outcomes. The studies confirmed the importance of understanding primary and revisional bariatric surgery patients' needs and vulnerabilities, and identified not only their unique psychosocial factors but combinations of factors, and, the increase in intensity of factors that explained these patients' weight loss trajectories