Prevalence and influence factors of tic disorders among 7 – 15 years old children in Qiannan region of Guizhou province

  Objective  To examine the prevalence and risk factors of tic disorders (TD) among 7 – 15 years old children living in southern area of Guizhou province and to provide references for taking corresponding interventions.

  Methods  A total of 99 488 children (7 – 15 years old) were randomly selected using stratified multi-stage sampling from Qiannan prefecture of Guizhou province and surveyed with a face-to-face interview, physical examination, and tic severity test between August 2016 and July 2017. SAS 9.1 was used in data analyses.

  Results  Totally 1 279 TD cases were diagnosed; the prevalence rate of TD was 1.29% and the standardized rate was 1.25% among the children surveyed. Multivariate logistic regression analysis revealed that with a family history of TD, premature birth, with adverse factors at birth, food preferences and preference for functional drinks, insomnia, poor academic performance, without any hobby, poor self-care ability, strained relationships in the family, maltreatment and physical punishment, strained relationship with parents, and noisy living environment were risk factors of TD among the children.

  Conclusion  More attentions should be paid to the high prevalence rate of TD among 7 – 15 years old children living in southern area of Guizhou province, and interventions on risk factors of TD should be implemented among the children.