Patient-driven Internet Delivered Psychological Treatment

1\) Participants who are randomized to the experimental condition are asked to make choices regarding the structure of their treatment by the time of the randomization call. The participant can choose which of the available treatment programs (targeting anxiety, worry, stress, sleep disorders or depression) they want to undergo, how many modules in the treatment program they want to complete and in what order, for how many weeks they want to complete the treatment as well as how much telephone contact and how much written contact they want to have with their therapist.

2\) Patients who are randomized to the control condition (standardized iCBT) undergo the usual iCBT program available for anxiety disorders for 8 weeks. The psychologist provide weekly feedback on the patient's exercises and interact with the patient via secure encrypted messages in the treatment program. A follow-up telephone call takes place at the middle of treatment and at the end of the treatment.