title: Status and Determinants of Motor Impairment in Preschool Children from Migrant Families in China.
abstract: BACKGROUND
  Although poor health conditions and decreased developmental levels have been investigated in migrant children, no study in China has focused on these children's individual motor development.
  
  
  OBJECTIVE
  This study aims to explore the prevalence of motor impairment in Chinese migrant children and to determine the contributory factors.
  
  
  METHODS
  In this cross-sectional study, a structured questionnaire was administered to primary caregivers of preschool children aged 3 - 6 (n = 2,976) in ten kindergartens from two districts of Suzhou, China, to assess the children's home socioeconomic status and motor environment, that is, the presence of affordances for motor development. Motor ability was assessed using the Movement Assessment battery for children-second edition (MABC-2). Multiple logistic regression analysis was used to determine the risk factors for motor impairment in migrant children.
  
  
  RESULTS
  Migrant children showed correlations with impairment in manual dexterity, aiming and catching, and motor development (odds ratios [ORs] = 1.320, 1.255, 1.260, respectively; P < 0.05). Outdoor movement affordances and toys for fine motor development were significantly associated with motor impairment in migrant children (ORs = 0.834 [movement affordances, 0.843 [toys], P < 0.05).
  
  
  CONCLUSIONS
  Chinese migrant children are at a high risk of motor impairment, which is associated with a lack of outdoor movement affordances and toys for fine motor development. Future prevention and intervention should focus on the motor environment of the home.
authors.affiliation: Pediatrics Research Institution of Soochow University, Suzhou, China; Wujiang Hospital Affiliated to Nantong University, the First People's Hospital of Wujiang, Medical School of Nantong University, Suzhou, China.
authors.forename: Hua
authors.initials: H
authors.lastname: Jin
authors.affiliation: Shanghai First Maternity and Infant Hospital, Tongji University School of Medicine, Shanghai, China.
authors.forename: Jing
authors.initials: J
authors.lastname: Hua
authors.affiliation: Wujiang Hospital Affiliated to Nantong University, the First People's Hospital of Wujiang, Medical School of Nantong University, Suzhou, China.
authors.forename: Jianqiang
authors.initials: J
authors.lastname: Shen
authors.affiliation: Fourth People's Hospital of Kunshan, Suzhou, China.
authors.forename: Lijuan
authors.initials: L
authors.lastname: Feng
authors.affiliation: Pediatrics Research Institution of Soochow University, Suzhou, China.
authors.forename: Guixiong
authors.initials: G
authors.lastname: Gu
keywords: Children; Mainland China; Migrant; Motor Impairment