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Background: Limited research has examined the impact of peanut allergy (PA) on children using validated instruments to assess psychosocial burden and the factors influencing burden. Objective: The PAPRIQUA study aimed to assess the caregiver‐reported impact of living with PA on children's health‐related quality of life (HRQL), correlations between PA severity and child's sex, and associations of caregivers' sex and anxiety with the proxy report of their child's HRQL and to identify significant predictors of a child's HRQL. Methods: A cross‐sectional survey of caregivers of children with mild, moderate and severe PA, based on caregiver perception, was conducted in the United Kingdom. Participants were recruited through a survey recruitment panel; a maximum quota of 20% who rated their child's PA as mild was set to ensure population diversity; however, the quota was not required as few participants considered their child's PA mild. The survey, funded by Aimmune Therapeutics, included sociodemographic and clinical questions, the EQ‐5D‐Y, Hospital Anxiety and Depression Scale, Food Allergy Quality of Life Questionnaire‐Parent Form (FAQLQ‐PF) and Food Allergy Independent Measure (FAIM). Results: One hundred caregivers of children with PA (aged 4‐15 years) completed the survey. Child's sex was not associated with proxy‐reported burden. For younger children (aged 4‐10 years), there was no effect of PA severity; parents of older children (aged 11‐15 years) reported low to higher burden for their child on the EQ‐5D‐Y and FAQLQ‐PF dependent upon PA severity. For all measures of child burden except the EQ‐5D‐Y, two or more reactions in the past 12 months and parental anxiety significantly predicted higher levels of burden for the child (P <.05–P <.001). Experiencing a life‐threatening event in the past 12 months significantly predicted EQ‐5D‐Y proxy utility (P <.01). Conclusions and Clinical Relevance: Caregivers report that children with PA experience high levels of psychosocial burden, particularly those with more severe PA and a reaction history. Interventions to decrease caregiver anxiety and reaction frequency may help reduce the child's burden. Self‐report studies in children with PA would help confirm these findings. [ABSTRACT FROM AUTHOR]