Formal interaction models including group, PSQI total score, and their interaction term did not reach statistical significance ( B = 0.200, r = 0.417, p = 0.022; 95% CI: 0.032–0.369), likely reflecting limited statistical power; however, the stratified analyses demonstrated a clear divergence in sleep–pain associations between insomnia and COMISA groups.
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Comorbid Insomnia and Sleep-Disordered Breathing in Painful Temporomandibular Disorders: Association With Pain Intensity.
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0.0220
0.0600
The sentences
a trend towards significancep = 0.06
Hypertension was more prevalent in the COMISA group, showing a trend towards significance ( p = 0.06), whereas diabetes prevalence was low and comparable between groups.