title: School performance and behavior of Korean elementary school students with sleep-disordered breathing.
abstract: OBJECTIVE
  It is known that children with sleep-disordered breathing (SDB) often have accompanying growth retardation and learning and behavior disabilities. However, these results are based mainly on studies of children from European and North American countries. The objective of this study was to investigate the school performance and behavior of Korean children with SDB.
  
  
  METHODS
  We enrolled 302 third-grade elementary students from an elementary school in Seoul. A survey was conducted, using information from the children's parents for the diagnosis of SDB. The children's height, weight, midterm examination scores, and behavioral disturbances were analyzed.
  
  
  RESULTS
  Overall, 299 parents returned the survey. Of the 299 students, 29 (9.7%) were considered to have SDB. They showed no difference from the control in terms of body mass index. The mean examination score was higher in the control group than in the SDB group. However, there was a statistical difference only in social science. The prevalences of students who were inattentive (58.6% versus 23.7%) and lacking in self-control (44.8% versus 14.1%) were significantly higher among students with SDB.
  
  
  CONCLUSIONS
  SDB is not closely associated with poor school performance among Korean elementary students. However, behavioral disturbance is more frequent among the students with SDB than in those without.
authors.affiliation: Department of Otorhinolaryngology-Head and Neck Surgery, College of Medicine, Konkuk University, Seoul 143-729, Korea.
authors.forename: Jin Kook
authors.initials: JK
authors.lastname: Kim
authors.forename: Ji Hye
authors.initials: JH
authors.lastname: Lee
authors.forename: Seung-Hoon
authors.initials: SH
authors.lastname: Lee
authors.forename: Seok-Chan
authors.initials: SC
authors.lastname: Hong
authors.forename: Jae Hoon
authors.initials: JH
authors.lastname: Cho
mesh_terms: D000124:Achievement; D001288:Attention; D015992:Body Mass Index; D016022:Case-Control Studies; D002648:Child; D002653:Child Behavior Disorders / Q000453:epidemiology*; D005260:Female; D006801:Humans; D008297:Male; D056910:Republic of Korea / Q000453:epidemiology; D012891:Sleep Apnea Syndromes / Q000175:diagnosis* / Q000453:epidemiology