An overview of obesity-specific quality of life questionnaires.

The measurement of quality of life in patients with obesity is useful to evaluate the effects of treatment (including bariatric surgery) and may influence the development of clinical pathways, service provision, healthcare expenditures and public health policy. Consequently, clinicians, researchers and policy makers must rely on valid measurement instruments. We reviewed 11 obesity-specific quality of life questionnaires and classified them according to their domain of interest and described their measurement properties (specifications, validity, reliability, responsiveness and interpretability).