title: [Incidence and mortality of oral cavity and pharyngeal cancer in China, 2009].
abstract: OBJECTIVE
  To analyze the incidence and mortality of oral cavity and pharyngeal cancer in cancer-registration areas of China in 2009.
  
  
  METHODS
  We collected data about incidence of oral cavity and pharyngeal from 72 cancer registry sites of National Central Registry Database in 2009, covering 85 470 522 person (57 489 009 were from urban areas, 27 981 513 were from rural areas).Incidence and mortality rates, proportions, cumulative rate (0-74 years old), cut rate (35-64 years old), age-specific rate were then calculated and analyzed respectively. The age-standardized rate was calculated and adjusted by the Chinese standard population in 1982 as well as the Segi's world standard population.
  
  
  RESULTS
  There were 2803 new diagnosed oral cavity and pharyngeal cancer cases, 1793 male and 1010 female, with the sex ratio at 1.78: 1. The crude incidence rate of oral cavity and pharyngeal cancer was 3.28/100 000(2803/85 470 522). The crude incidence rate of males was 4.15/100 000(1793/43 231 554) while it was 2.39/100 000(1010/42 238 968) among females. The age-standardized incidence rates by Chinese standard population (ASIRC) and the world standard population were 1.72/100 000 and 2.23/100 000 respectively, and the cumulative rate and cut rate was separately 0.26% and 4.02/100 000. The crude incidence and ASIRC of oral cavity and pharyngeal cancers were 3.87/100 000 (2225/57 489 009) and 1.97/100 000 in urban areas, whereas in rural areas, they were 2.07/100 000(578/27 981 513) and 1.17/100 000. There were 1172 death cases, including 825 males and 347 females. The crude mortality rate was 1.37/100 000 (1172/85 470 522), while it was 1.91/100 000(825/43 231 554) among males and 0.82/100 000(347/42 238 968) among females. The age-standardized incidence rates were 0.64/100 000 and 0.88/100 000 respectively, by Chinese standard population (ASMRC) and the world standard population. The cumulative mortality rate (0-74 age years old) and cut rate were separately 0.10% and 1.34/100 000. The mortality and ASMRC were 1.59/100 000(915/57 489 009) and 0.72/100 000 in urban areas, whereas in rural areas, they were 0.92/100 000(257/27 981 513) and 0.48/100 000 respectively.
  
  
  CONCLUSIONS
  Both the incidence and mortality of oral cavity and pharyngeal cancer in China were still low in 2009.
authors.affiliation: Department of Head and Neck, Henan Cancer Hospital,Zhengzhou University, Zhengzhou 450008, China.
authors.forename: Shan-ting
authors.initials: ST
authors.lastname: Liu
authors.forename: Jun-fu
authors.initials: JF
authors.lastname: Wu
authors.forename: Rong-shou
authors.initials: RS
authors.lastname: Zheng
authors.forename: Si-wei
authors.initials: SW
authors.lastname: Zhang
authors.forename: Xi-bin
authors.initials: XB
authors.lastname: Sun
authors.forename: Wan-qing
authors.initials: WQ
authors.lastname: Chen
mesh_terms: D000293:Adolescent; D000328:Adult; D017677:Age Distribution; D000368:Aged; D000369:Aged, 80 and over; D002648:Child; D002675:Child, Preschool; D002681:China / Q000453:epidemiology; D005260:Female; D006801:Humans; D015994:Incidence; D007223:Infant; D007231:Infant, Newborn; D008297:Male; D008875:Middle Aged; D009062:Mouth Neoplasms / Q000453:epidemiology* / Q000401:mortality*; D010610:Pharyngeal Neoplasms / Q000453:epidemiology* / Q000401:mortality*; D012424:Rural Population; D017678:Sex Distribution; D015996:Survival Rate; D014505:Urban Population; D055815:Young Adult