Coal ash and children's sleep : a community-based study.

Pediatric anxiety and/or depression problems : associations with PM10, fly ash, and metal exposure.

“…Because the current study did not collect information on time to bed or sleep quality, we are unable to investigate this as a potential covariate. In the initial pilot study, investigators collected information on sleep disruptive behaviors and found a significant association between sleep disruptive behaviors that affect maintenance of sleep and coal ash exposure (p-value<0.001) (175).…”