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Insomnia mediator model includes the direct effect of trait-anxiety on Insomnia consequences (Ic’); Ind-1 [I01 → I10]: Trait-anxiety → Insomnia perception factors → Insomnia consequences; Ind-2 [I01 → I12 → I20]: Trait-anxiety → Insomnia perception factors→ State-anxiety→ Insomnia consequences; Covariates: Confounding factors and Physiological problems.
