The Norwegian Translation of the Adult Attention-Deficit/Hyperactivity Disorder Quality of Life Scale: Validation and Assessment of QoL in 313 Adults With ADHD.

OBJECTIVE The aim of the study was to validate the Norwegian version of the Adult Attention-Deficit/Hyperactivity Disorder Quality of Life (AAQoL) scale and to explore Quality of Life (QoL) and functional outcomes in adults with ADHD. METHOD A total of 313 adults with ADHD participated in the study. Data were collected from medical records and self-report questionnaires. Confirmatory factor analysis was performed to assess the model fit of the translated AAQoL. Chi-square statistics andttests were used to investigate sample characteristics. RESULTS The analyses showed acceptable model fit between data and the model. Chi square = 863.179 (371df, p< .0000), root mean square error of approximation (RMSEA) = 0.069 (90% confidence interval [CI]), comparative fit index (CFI) = 0.873, and Tucker-Lewis index (TLI) = 0.821. Cronbach's alpha range for the scales was .761 to .869. The sample was characterized by poor QoL and impairment. CONCLUSION The translated AAQoL is showing good initial indications of validity with acceptable psychometric properties in the sample. ADHD was associated with impairments in QoL, symptoms, and functional outcomes.