Group treatment for insomnia
BehavioralExperimental: Group treatment of insomnia The intervention is a group treatment based on cognitive and behavioral changing methods. It is including seven sessions during 10 weeks. Each session last for 2 hours with a 20 minutes pause. The intervention includes psycho education about sleep. Methods as relaxation, coping with worry, sleep restriction, stimulus control, sleep hygiene, stress coping strategies, strategies for coping with daytime symptom, identify and reformulate negative and dysfunctional thoughts about sleep, daytime functioning and stress and strategies for reducing hypnotics.