Objectives
depression, anxiety
Overall, the current literature on trajectories of symptom change in iCBT is at an early stage, and more research is needed to confirm whether the classes found in previous studies are also observed in diverse samples from different settings. Identifying individuals who benefit from iCBT and those at risk of not improving is key to offering tailored interventions that fit the needs of specific populations, which may ultimately lead to increased response rates. In addition, learning more about the stage of treatment at which change occurs and its association with intervention use will shed light on whether intervention use acts as a mechanism for change in these trajectories. On the basis of this, this study sought to use routine outcome monitoring (ROM) data gathered from a pragmatic RCT in a clinical service setting to (1) identify latent classes of responders and associated participant characteristics during an iCBT intervention for depression and anxiety treatment and (2) investigate the presence of a time-varying relationship between trajectories of change and intervention use.