ResearchPod Summary
Adult ADHD is known to negatively impact occupational outcomes, including job stability and overall work performance. While psychostimulants are the standard first-line treatment for managing ADHD symptoms, medication adherence is often suboptimal. This study investigated the relationship between adherence to oral psychostimulant therapy and work productivity, as well as the associated indirect costs, in a sample of US adults.
Researchers conducted a cross-sectional, web-based survey of 602 adults who self-reported an ADHD diagnosis and were currently taking oral psychostimulants. Participants were categorized into two groups: those with high adherence (HA) and those with low/medium adherence (LMA), based on the Medication Adherence Reasons Scale (MAR-Scale). The study measured work productivity and activity impairment using the WPAI-GH questionnaire and calculated indirect costs based on absenteeism and presenteeism. Statistical models were adjusted for covariates such as age, ADHD symptom severity, and co-occurring medical or psychiatric conditions.
The study found that individuals in the LMA group experienced significantly higher levels of absenteeism and greater total indirect costs compared to the HA group. Even after adjusting for potential confounders, the association between lower adherence and increased absenteeism remained statistically significant. Furthermore, the LMA group reported higher ADHD symptom levels, suggesting that poor adherence may exacerbate the functional impairments associated with the disorder. Interestingly, the researchers noted that the negative impact of nonadherence on absenteeism-related costs was particularly pronounced in individuals with lower overall ADHD symptom levels.
These findings highlight the economic and functional consequences of medication nonadherence in adults with ADHD. The results suggest that improving adherence to psychostimulant therapy could potentially reduce the significant indirect costs associated with workplace absenteeism. The study also identifies common barriers to adherence, such as forgetfulness and logistical challenges, which may help clinicians develop more effective strategies to support patients in maintaining their treatment regimens.
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