Background
Few quality of life (QOL) assessment tools are available for children with specific chronic conditions, and none have been designed specifically for children with hearing loss (HL). A validated hearing-related QOL questionnaire could help clinicians determine whether an intervention is beneficial and whether one intervention is better than another.
Purpose
To examine QOL in children with HL and assess the validity, reliability, and factor structure of a new measure, the Hearing Environments and Reflection on Quality of Life (HEAR-QL) questionnaire.
Research Design
A descriptive and correlational study of a convenience sample of children.
Study Sample
Participants included 35 children with unilateral HL, 45 with bilateral HL, and 35 siblings with normal hearing.
Data Collection and Analysis
Children 7-12 years old were recruited by mail from a tertiary-care pediatric otolaryngology practice and the local county's Special School District. With parent consent, children completed the validated Pediatric Quality of Life Inventoryâą (PedsQLâą) 4.0 and a 35-item HEAR-QL questionnaire. The factor structure of the HEAR-QL was determined through principal components analysis (PCA), and mean scores were computed for each subscale and the total HEAR-QL. Three weeks following return of the initial questionnaires, a second HEAR-QL questionnaire was sent to participants to assess test-retest reliability. Both PedsQL and HEAR-QL scores were compared between children with and without HL, between children with unilateral and bilateral HL, and between children who used and did not use a hearing device using analysis of variance. Sensitivity and specificity were calculated for both the HEAR-QL and PedsQL. A multivariable, hierarchical linear regression analysis was conducted with independent variables associated with HEAR-QL in unadjusted tests.
Results
Using exploratory PCA, the 35-item HEAR-QL was reduced to 26 items (Cronbach's α=0.97; sensitivity 91% and specificity 92% at cut-off score of 93.5) loading on 3 factors: difficulty hearing in certain environments/situations (Environments α=0.97), impact of HL on social/sports activities (Activities α=0.92), and impact of HL on child's feelings (Feelings α=0.88). Sensitivity 78.8% and specificity 30.9% at a cut-off score of 69.6 on the PedsQL ((at-risk for impaired QOL) were lower than for the HEAR-QL. Participants with HL reported significantly lower mean total HEAR-QL scores (71 [SD 18] versus 98 [SD 5]; p < 0.001), but not mean total PedsQL scores (77 [SD 14] versus 83 [SD 15]; p = 0.47), than participants with normal hearing. Among children with bilateral HL, children who used a hearing device reported lower mean total HEAR-QL scores (p = 0.01), but not mean total PedsQL scores (p = 0.55), than children who did not use a hearing device. The intraclass correlation (ICC) for test-retest reliability for the 26-item HEAR-QL total score was .83. Hearing status and use of a device were independently associated with the HEAR-QL, and the variables in the model accoun...