Abstract
PURPOSE: This study aims to evaluate the impact of the COVID-19 pandemic on employment status, work productivity, quality of life (QOL), and depressive symptoms in undiagnosed adults with and without attention-deficit/hyperactivity disorder (ADHD) symptoms in Japan. METHODS: An observational study used baseline data from a Japanese Medilead Healthcare Panel before the COVID-19 pandemic (October-December 2019). Eligible panel participants were then surveyed during the pandemic (March 2021). ADHD symptoms were screened using the Adult ADHD Self-Report Scale. Changes in QOL (EuroQol 5-Dimensions 5-Levels; EQ-5D-5L) and productivity impairment (Work Productivity and Activity Impairment scale; WPAI) from before to during the pandemic were analyzed in undiagnosed adults with and without ADHD symptoms. Unemployment rate and depressive symptoms (Patient Health Questionnaire; PHQ-9) during the pandemic were compared between groups. RESULTS: Participants with (N=949) and without (N=942) ADHD symptoms completed the survey. The unemployment rate was not significantly different between participants with and without ADHD symptoms. Participants with ADHD symptoms were more likely to change jobs or employers during the pandemic. PHQ-9 scores in participants with ADHD symptoms were significantly higher than in those without ADHD symptoms (8.96 vs 3.57, respectively) during the pandemic. Before the pandemic, WPAI scores were significantly higher and EQ-5D-5L scores lower in participants with ADHD symptoms than in those without. Productivity improved and QOL was not altered during the pandemic in both groups, but productivity and QOL remained poorer among participants with ADHD symptoms than in those without. CONCLUSION: Productivity was improved among all participants during the COVID-19 pandemic, contrary to expectations. However, adults with ADHD symptoms consistently had lower productivity, poorer QOL, and more depressive symptoms than those without ADHD symptoms.