Trait Anxiety, State Anxiety, Symptoms of Insomnia, and Their Influences on Daytime Functioning in Adolescent Girls

Objectives. To study the relationship between symptoms of trait anxiety, state anxiety and symptoms of insomnia on the one hand and the extent of their influence on disorders of daytime functioning on the other in adolescent girls. Materials and methods. The study included 50 presumptively healthy adolescent female high school students aged 15–17 years selected on the principle of simple random sampling. Symptoms of insomnia and their influences on daytime functioning were assessed using the SLEEP-50 (S-50) questionnaire. Trait anxiety and state anxiety were assessed using the Spielberger questionnaire. Path analysis was used to identify significant associations. Results. Positive associations were found between the severity of disorders of daytime functioning and the severity of the symptoms of insomnia (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 covariance was found between the severity of the symptoms of insomnia and state anxiety (β = 0.53; p < 0.001). Conclusions. Improving the quality of sleep and daytime functioning in adolescents with symptoms of insomnia should take personality characteristics into account. High levels of trait anxiety increase the adverse consequences of insomnia in relation to indicators of daytime functioning.