The Impact of Airway Allergic Diseases on Children's and Parents' Quality of Life

\[Research Background\] Asthma and allergic rhinitis are common chronic diseases in children, significantly impacting their HRQoL and increasing healthcare burden. Allergen-specific immunotherapy (AIT) is an effective treatment for these conditions, shown to improve symptoms and QoL. This study aims to further understand the impact of AIT on QoL in children and their caregivers, using validated assessment tools and comprehensive clinical data. The findings will contribute to better clinical management and policy-making for pediatric allergic diseases. \[Study Design\] Prospective observational study. \[Primary Objectives\] Assess the current health-related quality of life (HRQoL) of children with airway allergic diseases (bronchial asthma, allergic rhinitis, or both) using the EQ-5D-Y and disease-specific scales. Evaluate and compare the dynamic changes in HRQoL over 1 and 2 years in children undergoing routine treatment versus specific immunotherapy. Analyze the impact of treatment type, disease severity, and treatment outcomes. Determine the impact of allergic diseases on children's HRQoL by comparing them with healthy controls. \[Secondary Objectives\] Explore the caregiver burden and spillover effects on parents using the PedsQL Family Impact Module, compared with healthy controls. Compare the QoL of parents based on different treatment plans, disease severities, and treatment outcomes of their children. Validate the newly developed Chinese versions of EQ-5D-Y and EQ-HWB-S for parents' QoL assessment. \[Participants\] 200 children (ages 5-16) diagnosed with bronchial asthma, allergic rhinitis, or both, and their 200 parents (caregivers), divided into two groups: 100 children receiving specific immunotherapy and 100 receiving routine treatment. Control group: 100 healthy children and their parents. \[Methods\] Children with Allergies: Complete baseline and two follow-up surveys. Use the EQ-5D-Y-3L (3 level of EQ-5D-Y), EQ VAS (Visual Analogue Scale), PAQLQ (Pediatric Asthma Quality of Life Questionnaire) or JRQLQ-No. 1 (Japanese Rhinoconjunctivitis Quality of Life Questionnaire No. 1 ), and Overall Health Assessment (OHA). Healthy Children: Complete a single baseline survey using EQ-5D-Y-3L, EQ VAS, and OHA. Parents: Complete EQ-HWB-S, demographic information, EQ-5D-5L, OHA, and PedsQL (Pediatric Quality of Life Inventory) Family Impact Module. Clinical data collection from medical records including diagnosis, symptoms, laboratory tests (lung function, allergens, eosinophils, IgE, FeNO\[Fractional Exhaled Nitric Oxide\]), treatment plans, side effects, and complications. \[Inclusion Criteria\] Children with Allergies: Ages 5-16, diagnosed with bronchial asthma, allergic rhinitis, or both, with continuous treatment for ≥4 weeks. Able to understand and complete questionnaires. Healthy Children: Ages 5-16, without a history of allergic diseases. Able to understand and complete questionnaires. Parents: Primary caregivers, present during survey, signed informed consent. \[Study Endpoints\] Completion of the second follow-up survey by the last enrolled child and parent. \[Primary Outcomes\] Disease severity (Asthma Control Test, ACT). Laboratory tests (lung function, serum allergens, eosinophils, IgE, oral/nasal FeNO) \[Statistical Methods\] Compare HRQoL before and after treatment in children and parents, and between allergic and healthy groups using t-tests, Wilcoxon rank-sum tests, chi-square tests, or Fisher's exact tests. Use ANOVA, Kruskal-Wallis tests, and chi-square tests for multiple group comparisons. Analyze correlations between HRQoL and influencing factors using multiple regression. Validate HRQoL scales using variance analysis for construct validity and effect size for responsiveness.