COA-APTIC Cognitive Interview Study of Caregiver and Clinician Assessment of Acute Pain in Infants and Young Children

Inclusion Criteria: Caregivers * Cares for a child who is both: Between 0 and \<2 years of age and experiencing or has experienced acute pain in the past four weeks in one of the following categories: Malignant or non-malignant visceral or hematologic disease; Surgery (or other procedure); Trauma or injury ; Congenital conditions * Is over the age of 18 years * Can speak and understand English or Spanish * Is capable of and willing to provide informed consent for interview participation and to collect data from the child's medical record. Clinicians * Practicing clinician in a clinical care environment * Treats or works with pediatric patients who are between 0 and \<2 years of age AND being treated for acute pain. * Cares for pediatric patients \>50% of their clinical time. * Holds one of the following titles/positions: physician, clinical pharmacist (Pharm D), nurse practitioner, physician's assistant, nurse (with a BSN/RN or higher) * Is over the age of 18 years * Can speak and understand English * Is capable of and willing to provide informed consent for interview participation. Exclusion Criteria: * Lack of access to a telephone or computer for interview * For caregivers, has a child with acute pain who is premature at less than 32 weeks corrected gestational age at the time of enrollment and no other eligible child.