Validation of the first treatment-specific questionnaire for the assessment of patient satisfaction with allergen-specific immunotherapy in allergic patients: the ESPIA questionnaire.

Background: Satisfaction with treatment is a patient-reported outcome shown to be associated with the patient's health-related decisions and treatment-related behavior, thereby influencing the chances of successful treatment, and is especially relevant in long-term treatment, such as allergen-specific immunotherapy (AIT).

Objective: We sought to assess the psychometric properties of the Satisfaction Scale for Patients Receiving Allergen Immunotherapy (ESPIA) questionnaire so as to determine the satisfaction of patients receiving AIT treatment.

Methods: An observational, longitudinal, multicenter study was performed on patients with allergic rhinitis (AR) undergoing AIT treatment.