title: [Analysis of 5459 cleft lip and palate cases].
abstract: OBJECTIVE
  To analyse the constitution of 5459 cleft lip and palate cases and to review the development of surgical treatment to them.
  
  
  METHODS
  The data of the 5459 cleft lip and palate cases were collected and classified. The ratio of sex and disease pattern were calculated and analyzed statistically. Also, by means of classification of the disease pattern, the operation methods and the operation time, the change of the surgical methods and the first operation age were analyzed.
  
  
  RESULTS
  In the cleft lip and palate cases, the sex ratio is different. There were obvious differences in the first operative ages in different periods. The main repair methods for cleft lip and palate changed with time.
  
  
  CONCLUSIONS
  The male is more than the female in the cleft lip and palate patients. The average first operation age has been decreased and the main repair methods have changed since 1980.
authors.affiliation: Plastic Surgery Hospital of Chinese Academy of Medical Sciences, Beijing 100041, China.
authors.forename: Bin
authors.initials: B
authors.lastname: Xiong
authors.forename: Min
authors.initials: M
authors.lastname: Zhao
authors.forename: Ting
authors.initials: T
authors.lastname: Cheng
authors.forename: Pu
authors.initials: P
authors.lastname: Gao
mesh_terms: D002681:China / Q000453:epidemiology; D002971:Cleft Lip / Q000453:epidemiology / Q000473:pathology / Q000601:surgery*; D002972:Cleft Palate / Q000453:epidemiology / Q000473:pathology / Q000601:surgery*; D005260:Female; D006801:Humans; D008297:Male; D012737:Sex Factors; D013223:Statistics as Topic