[Trait and state anxiety, symptoms of insomnia and their influence on daytime functioning in adolescent girls]

To investigate the relationship between symptoms of trait anxiety, state anxiety and symptoms of insomnia and the degree of their influence on daytime functioning disorders in adolescent girls.

The study included 50 healthy adolescent girls, senior school students, aged 15-17 years, selected as simple random sample. Insomnia symptoms and their impact on daytime functioning were assessed using the SLEEP-50 (S-50) questionnaire. Trait and state anxiety were assessed using the Spielberger questionnaire. The method of path analysis was used to identify significant associations.

There was a positive association of the severity of daytime functioning disorders with the severity of insomnia symptoms (β=0.45; p<0.001) and the level of trait anxiety (β=0.34; p=0.004). Trait anxiety was also a significant predictor of state anxiety (p<0.001), with a direct relationship between these parameters (β=0.62). Positive covariation of insomnia symptoms severity and state anxiety was found (β=0.53; p<0.001).

Improving sleep quality and daytime functioning in adolescents with insomnia symptoms should take into account personality characteristics. High levels of trait anxiety increase the negative effects of insomnia on the impaired daytime functioning.