title: [Analysis on physical and mental health and related influential factors among those 'left behind' adolescents in Anhui province].
abstract: OBJECTIVE
  To explore the physical and mental health status on the 'left behind' students in Anhui province and the related influential factors.
  
  
  METHODS
  Stratified cluster sampling method was used to investigate the 682 out of 3421 students from 7 middle schools in both south and north Anhui province, using multidimensional sub-health questionnaire of adolescents (MSQA) and mental health test (MHT), for assessment of the general condition, physical and mental health status.
  
  
  RESULTS
  14.22% of the 'left behind' students were in sub-health condition compared to 11.28% among the normal students, and the mental sub-health status represented 13.64% for the former and 10.84% for the latter. In addition, the 'left behind' students appeared less content with their life than those of staying with their parents (P < 0.05). MHT scores in the subjects were positively correlated with the scores on MSQA and showed significant difference (P < 0.01).
  
  
  RESULTS
  from the multiple linear regression analysis showed that the mental health condition among the left behind students was in linear regression relationship with the decreased physical activity (β = 1.456, P = 0.001), emotional problems (β = 1.096, P = 0.000) and problems of social adaptation (β = 1.011, P = 0.006). The status of physical sub-health in the Anhui province showed that there was no significant difference in each of the study group (P > 0.05).
  
  
  CONCLUSIONS
  Decreased physical activity and emotion aporia as well as difficult social adaptation were major factors leading to degenerated mental health levels in the 'left-behind' adolescents. The findings suggested that the mental health status could be improved in this population through better management on their body-health condition.
authors.affiliation: Department of Preventive Medicine, Wannan Medical College, Wuhu 241002, China. yingshuiyao@163.com
authors.forename: Ying-Shui
authors.initials: YS
authors.lastname: Yao
authors.forename: Yao-Wen
authors.initials: YW
authors.lastname: Kang
authors.forename: Yue-Long
authors.initials: YL
authors.lastname: Jin
authors.forename: Yan
authors.initials: Y
authors.lastname: Chen
authors.forename: Wei-Zhi
authors.initials: WZ
authors.lastname: Gong
authors.forename: Li
authors.initials: L
authors.lastname: Zheng
authors.forename: Zhou
authors.initials: Z
authors.lastname: An
authors.forename: Fang-Biao
authors.initials: FB
authors.lastname: Tao
authors.forename: Jia-Hu
authors.initials: JH
authors.lastname: Hao
mesh_terms: D000293:Adolescent; D002681:China / Q000453:epidemiology; D006304:Health Status; D054624:Health Status Disparities; D006801:Humans; D001523:Mental Disorders / Q000453:epidemiology*; D008603:Mental Health; D010287:Parent-Child Relations; D010808:Physical Examination; D012307:Risk Factors; D013334:Students / Q000523:psychology* / Q000706:statistics & numerical data; D011795:Surveys and Questionnaires