Study on the association between sleep quality and anxiety-depression symptoms in school-aged children.

Higher baseline PSQI scores independently predicted subsequent anxiety symptoms in school-aged children.

• Adjusted OR = 1.144, p < 0.001.
• Models adjusted for confounding factors and baseline emotional levels.
• Sample was 1,529 children (782 boys, 747 girls; mean age 8.00 ± 1.0 years) who completed two surveys; anxiety measured with GAD-7 and sleep with PSQI-5.

Higher baseline PSQI scores independently predicted subsequent depressive symptoms.

• Adjusted OR = 1.097, p = 0.013.
• Depression was measured with CDI-S.
• Binary logistic regression adjusted for confounders and baseline emotional levels; missing covariates handled by multiple imputation.

Higher baseline PSQI scores independently predicted coexisting anxiety and depression symptoms.

• Adjusted OR = 1.146, p = 0.003.
• Adjusted for confounding factors and baseline emotional levels.

Increases in PSQI over time (ΔPSQI) were positively associated with worsening emotional symptoms.

• All associations reported as p < 0.001.
• Analyzed using binary logistic regression and multiple linear regression of sleep change values against follow-up emotional outcomes.

Mean sleep problem, anxiety, and depression scores were lower at follow-up than at baseline.

• Total scores of PSQI-5, GAD-7, and CDI-S at follow-up were all lower than at baseline (p < 0.001).
• Two survey waves among 1,529 children in grades 1-3 at three primary schools in an urban district of Chongqing.

The study design was a short-term longitudinal analysis within a child and adolescent growth and development cohort, intended to inform mental health surveillance and risk assessment.

• Participants recruited from grades 1-3 at three local primary schools in an urban district of Chongqing.
• Instruments: PSQI-5 (sleep), GAD-7 (anxiety), CDI-S (depression).