Transdiagnostic Online CBT vs. Care as Usual for Primary Care Patients With Common Mental Disorders

Inclusion Criteria: To be included patients have to: 1. have a common mental disorder in form of an anxiety disorder (social phobia, panic disorder, agoraphobia, general anxiety disorder, or specific phobia), health anxiety (hypochondriasis or illness anxiety disorder), obsessive-compulsive disorder, depression (depression or dysthymia), or a stress-related disorder (exhaustion disorder, adjustment disorder, or post-traumatic stress disorder), that warrants treatment, 2. be at least 18 years old, 3. have regular access to a device with an Internet connection, 4. be able to read and write in Swedish, 5. have no severe psychiatric disorder that requires specialized psychiatric care, such as psychosis, bipolar disorder, or anorexia nervosa, 6. if on medication with monoamine agonist, have stable dosage in the past month, 7. have no on-going psychological treatment, and 8. provide written informed consent for participation and complete baseline assessment