CONCLUSION: While both group-format therapist-guided iCBT and FTF-CBT were effective at post-treatment, only FTF-CBT maintained benefits across all outcomes at 1-year follow-up and showed larger effect sizes than iCBT in exploratory comparisons. Exploratory path analyses identified the role of changes in dysfunctional attitudes in synchronous long-term symptom covariation linked to sustained psychological QoL. These findings offer valuable insights into strategies for enhancing the real-world…
