Glasgow Benefit Inventory

The Glasgow Benefit Inventory (GBI) is an 18-item self-report questionnaire designed to measure change in health status and general well-being resulting from otolaryngologic intervention (surgery, medical treatment). Unlike generic health-related quality-of-life measures, the GBI is disease-specific, asking patients to compare their post-intervention status to their pre-intervention baseline. Developed by Robinson, Gatehouse, and Browning in 1996, the GBI has become the standard outcome measure for evaluating benefit from ear, nose, and throat surgery and treatment.