This phase IV study is a prospective, open-label, randomized, pragmatic study to investigate the treatment effectiveness of Adhansia XR at Month-2 after initiation, and the effectiveness of Adhansia XR overall and when compared with the active comparator group (OROS MPH or Concerta) over time. Additional outcome assessments for both treatment arms include Health-Related Quality of Life (HRQoL) during the 6-month follow-up period. The burden of illness (BOI) will be investigated by collecting additional measures such as healthcare resource utilization (HCRU), broader treatment patterns, and comorbidities.