title: [Duration of breastfeeding and its relevant influencing factors in urban and rural areas of Chengdu].
abstract: OBJECTIVE
  To investigate the status and relevant factors influencing the duration of breastfeeding in urban and rural areas of Chengdu, China.
  
  
  METHODS
  1178 infants and young children aged 6-24 months were selected by stratified cluster random sampling. Breastfeeding information for subjects was obtained by interviewing mothers with a questionnaire. Kaplan-Meier method and Cox proportional hazard model were used to identify the factors associated with the termination of breastfeeding.
  
  
  RESULTS
  The median of the duration for breastfeeding was 6.0 months in the urban group and 8.0 months in the rural group (P < 0.05). This study showed that the cost of food consumed by baby was negatively correlated with breastfeeding duration, but the maternity leave was positively correlated with breastfeeding duration.
  
  
  CONCLUSIONS
  Breastfeeding duration for children in Chengdu was insufficient. Intervention program should be implemented to improve breastfeeding status.
authors.affiliation: Department of Nutrition and food Hygiene, West China School of Public Health, Sichuan University, Chengdu 610041, China. huanglujiao@yahoo.com.cn
authors.forename: Lujiao
authors.initials: L
authors.lastname: Huang
authors.forename: Guo
authors.initials: G
authors.lastname: Zeng
authors.forename: Ming
authors.initials: M
authors.lastname: Li
authors.forename: Longrong
authors.initials: L
authors.lastname: Ran
authors.forename: Ke
authors.initials: K
authors.lastname: Chen
authors.forename: Xuehong
authors.initials: X
authors.lastname: Pang
authors.forename: Li
authors.initials: L
authors.lastname: Yu
mesh_terms: D001942:Breast Feeding / Q000706:statistics & numerical data*; D002675:Child, Preschool; D002681:China / Q000453:epidemiology; D005260:Female; D006801:Humans; D007223:Infant; D053208:Kaplan-Meier Estimate; D008297:Male; D016016:Proportional Hazards Models; D012424:Rural Population; D012494:Sampling Studies; D011795:Surveys and Questionnaires; D013995:Time; D014505:Urban Population