title: Bed-sharing and related factors in early adolescents.
abstract: OBJECTIVE
  To investigate the prevalence of bed-sharing and examine correlates of bed-sharing habits in early adolescents.
  
  
  METHODS
  Participants were 1452 early adolescents from 10 primary schools in Shanghai, China. Children's health status and past history, family environment and parents' attitude towards bed-sharing, and children's sleep arrangements were surveyed. Sleep was assessed by the Children's Sleep Habit Questionnaire. Tanner stage was determined by the endocrinologist.
  
  
  RESULTS
  The median of age was 10.83 years (range: 9.42-12.92; 95% confidence interval [CI]: 10.79-10.83) and boys accounted for 51.17%. The prevalence of bed-sharing was 16.8%. Positive parental attitude toward bed-sharing (OR: 9.87; 95% CI: 6.57-14.83), asthma (OR: 2.15; 95% CI: 1.16-3.98), smaller residential space (OR: 1.90; 95% CI: 1.17-3.09), extended family (OR: 1.59; 95% CI: 1.16-2.18), and being physically less mature (OR: 2.39; 95% CI: 1.16-4.91) increased the likelihood of bed-sharing. Bed-sharers were more likely to have bedtime resistance (OR: 12.20; 95% CI: 8.59-17.33), sleep anxiety (OR: 3.76; 95% CI: 2.74-5.15), and poor sleep quality (OR: 3.21; 95% CI: 2.28-4.81) compared to non-bed-sharers. Furthermore, bed-sharing was associated with daytime sleepiness (OR: 1.53; 95% CI: 1.10-2.13) but not with sleep duration.
  
  
  CONCLUSIONS
  Bed-sharing is highly prevalent among Chinese early adolescents and is significantly related to sleep quality. Parental positive attitude toward bed-sharing was the most determining factor.
authors: Department of Developmental and Behavioral Pediatrics, Shanghai Children's Medical Center, School of Medicine, Shanghai Jiaotong University, Shanghai, China; Ministry of Education-Shanghai Key Laboratory of Children's Environmental Health, Shanghai, China.
authors: Yanrui
authors: Y
authors: Jiang
authors: Department of Developmental and Behavioral Pediatrics, Shanghai Children's Medical Center, School of Medicine, Shanghai Jiaotong University, Shanghai, China; Ministry of Education-Shanghai Key Laboratory of Children's Environmental Health, Shanghai, China.
authors: Wenjuan
authors: W
authors: Chen
authors: Department of Developmental and Behavioral Pediatrics, Shanghai Children's Medical Center, School of Medicine, Shanghai Jiaotong University, Shanghai, China; Ministry of Education-Shanghai Key Laboratory of Children's Environmental Health, Shanghai, China.
authors: Karen
authors: K
authors: Spruyt
authors: Department of Developmental and Behavioral Pediatrics, Shanghai Children's Medical Center, School of Medicine, Shanghai Jiaotong University, Shanghai, China; Ministry of Education-Shanghai Key Laboratory of Children's Environmental Health, Shanghai, China.
authors: Wanqi
authors: W
authors: Sun
authors: Department of Developmental and Behavioral Pediatrics, Shanghai Children's Medical Center, School of Medicine, Shanghai Jiaotong University, Shanghai, China; Ministry of Education-Shanghai Key Laboratory of Children's Environmental Health, Shanghai, China.
authors: Yan
authors: Y
authors: Wang
authors: Ministry of Education-Shanghai Key Laboratory of Children's Environmental Health, Shanghai, China; Shanghai Institute for Pediatric Research, Xinhua Hospital Affiliated with Shanghai Jiao Tong University School of Medicine, Shanghai, China.
authors: Shenghui
authors: S
authors: Li
authors: Ministry of Education-Shanghai Key Laboratory of Children's Environmental Health, Shanghai, China; Shanghai Institute for Pediatric Research, Xinhua Hospital Affiliated with Shanghai Jiao Tong University School of Medicine, Shanghai, China.
authors: Xiaoming
authors: X
authors: Shen
authors: Department of Developmental and Behavioral Pediatrics, Shanghai Children's Medical Center, School of Medicine, Shanghai Jiaotong University, Shanghai, China.
authors: Guanghai
authors: G
authors: Wang
authors: Department of Developmental and Behavioral Pediatrics, Shanghai Children's Medical Center, School of Medicine, Shanghai Jiaotong University, Shanghai, China; Ministry of Education-Shanghai Key Laboratory of Children's Environmental Health, Shanghai, China. Electronic address: fanjiang@shsmu.edu.cn.
authors: Fan
authors: F
authors: Jiang
mesh_terms: D000293:Adolescent; D001290:Attitude; D001513:Beds; D002648:Child; D002681:China / Q000453:epidemiology; D003430:Cross-Sectional Studies; D003466:Cultural Characteristics; D005260:Female; D006801:Humans; D008297:Male; D010290:Parents / Q000523:psychology; D015995:Prevalence; D012890:Sleep; D012893:Sleep Wake Disorders / Q000453:epidemiology; D012923:Social Class; D011795:Surveys and Questionnaires
keywords: Adolescent; Bed-sharing; Co-sleeping; Epidemiology; Sleep habit