Retrospective Record Review of Adults and Children Advised for Allergen Immunotherapy (MK-7243-022)

Evaluation of Patient Initiation and Persistence With Advised Allergen Immunotherapy

The purpose of this study is to determine the proportion of participants that initiate allergen immunotherapy (AIT) upon the recommendation of their physician and the proportion of participants that persist with their AIT throughout the recommended course.

Inclusion Criteria:

• Diagnosis of AR with or without allergic conjunctivitis (AC)
• Documented provider-to-patient or parent discussion of AIT as a treatment option

Exclusion Criteria:

• Participants receiving AIT as an AR treatment without documented provider-to-patient or parent discussion of AIT as a treatment option
• Participants receiving immunotherapy for insect sensitivities only
• AIT started before 2005