Insomnia May Mediate the Relationship Between Stress and Anx
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High perceived stress and anxiety disorders are usually comorbid with each other, with stress often sequentially preceding the development of anxiety. A cross-sectional study on university students (n = 475, age = 21.1+2.6 years) was conducted over 3 months.

Participants completed self-report measures of Leeds Sleep Evaluation Questionnaire-Mizan (LSEQ-M), Perceived Stress Scale-10 (PSS-10), generalized anxiety disorder-7 scale (GAD-7), and a sociodemographic tool. The mediation effect model given by Baron and Kelly was used to determine the relationship.

Results:
The prevalence of insomnia and anxiety disorder was 43.6% and 21.9%, respectively. Stress was significantly associated with LSEQ-M (insomnia measure) (b = ? .44, SE = 0.16), and high levels of anxiety (b = 0.25, SE = 0.03). The indirect effect of stress on anxiety through LSEQ-M (insomnia measure) was significant. However, the indirect effect of anxiety on stress through LSEQ-M (insomnia measure) was non-significant.

It was concluded that students having higher perceived stress levels and comorbid insomnia were also likely to have a higher anxiety level.

Source: https://www.dovepress.com/insomnia-may-mediate-the-relationship-between-stress-and-anxiety-a-cro-peer-reviewed-article-NSS
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