Taken as a whole, this study shows that adding cognitive-behavioral intervention and cognitive-behavioral intervention and preventive physical therapy can enhance the prevention of long-term disability. There was no substantial difference in the results between the cognitive-behavioral intervention group and cognitive-behavioral intervention and preventive physical therapy group.

This study is aimed at examining whether psychosocial work stressors are related to the development and maintenance of insomnia. A prospective design was used with a baseline and a 1-year follow-up questionnaire (N = 1,530). The results showed that among individuals with no insomnia at baseline, high work demands increased the risk of developing insomnia 1 year later. Among participants with insomnia at baseline, high leader support decreased the risk of still reporting insomnia at follow-up. Finally, low influence over decisions and high work demands were related to the maintenance of insomnia. The results indicate that perceived work stressors are related to the development and maintenance of insomnia. This might have implications for how insomnia is conceptualized as it places work stressors in the model and for how interventions at different stages of insomnia are implemented.

Compared to a group receiving usual treatment and waiting for exposure, the exposure in vivo group demonstrated a significantly larger improvement on function. Overall exposure had moderate effects on function, fear and pain intensity. We conclude that exposure may be important in treatment, but is not recommended as a "stand alone" adjunct to usual treatment.

The purpose of this study was to examine the associations between anxiety, depression and insomnia, and to investigate whether anxiety and depression are related to future insomnia. This study employed a combination of a cross-sectional and a prospective design. From a randomly selected sample from the general population (N ¼ 3600), 1936 participants filled out a baseline and 1-year follow-up survey on insomnia, anxiety and depression. Odds ratios (ORs) estimations were used to investigate the associations between anxiety, depression, and insomnia. In the cross-sectional study, anxiety (OR: 4.61) and depression (OR: 2.42) showed moderate to strong associations with insomnia. However, the prospective study showed that anxiety (OR: 3.35) was more strongly related than depression (OR: 1.96) to the development of insomnia 1 year later. While anxiety seems to play a key role in the development of insomnia, depression may be considered as a possible precipitating mechanism but even more likely as a consequence of insomnia.