title: Factors associated with lip and oral cavity cancer.
abstract: OBJECTIVE
  This study aimed to identify factors associated with the occurrence of primary cancer of the lip and oral cavity regions compared to other types of head and neck cancers according to demographic, socioeconomic data and lifestyle, in Brazil, from 2000 to 2011.
  
  
  METHODS
  A study was conducted using Hospital Cancer Records (Instituto Nacional do Câncer), from 2000 to 2011, totaling 23,153 cases. Data were analyzed by binary logistic regression (response category: primary cancers located in the lip and oral cavity; comparison category; other types of primary cancer in the head and neck, which does not affect the lip and oral cavity) at a significance level α = 5%.
  
  
  RESULTS
  The study showed factors associated with higher incidence of cancer in the lip and oral cavity: being of advanced age (OR = 1.16), not having a family history of cancer (OR = 2.38), alcohol consumption (OR = 1.17); former tobacco use (OR = 1.51) or current tobacco use (OR = 1.65); having a previous diagnosis of cancer without treatment (OR =1.66). Being female (OR = 0.92), having completed basic (OR = 0.71) and higher (OR = 0.46) education and having previous diagnosis of cancer with treatment (OR = 0.74) constituted factors associated with lower prevalence of cancer of the lip and oral cavity.
  
  
  CONCLUSIONS
  Age, absence of family history of cancer, smoking habits and alcohol consumption, and previous diagnosis of cancer without treatment were associated with a higher incidence of cancer of the lip and oral cavity.
authors.affiliation: Universidade Federal da Paraíba, João Pessoa, PB, Brasil.
authors.forename: Isabella Lima Arrais
authors.initials: IL
authors.lastname: Ribeiro
authors.affiliation: Universidade Federal da Paraíba, João Pessoa, PB, Brasil.
authors.forename: Júlia Julliêta
authors.initials: JJ
authors.lastname: de Medeiros
authors.affiliation: Universidade Federal da Paraíba, João Pessoa, PB, Brasil.
authors.forename: Larycia Vicente
authors.initials: LV
authors.lastname: Rodrigues
authors.affiliation: Universidade Federal da Paraíba, João Pessoa, PB, Brasil.
authors.forename: Ana Maria Gondim
authors.initials: AM
authors.lastname: Valença
authors.affiliation: Universidade Federal da Paraíba, João Pessoa, PB, Brasil.
authors.forename: Eufrásio de Andrade
authors.initials: Ede A
authors.lastname: Lima Neto
mesh_terms: D000428:Alcohol Drinking / Q000453:epidemiology; D001938:Brazil / Q000453:epidemiology; D005260:Female; D006801:Humans; D008046:Lip / Q000473:pathology*; D008297:Male; D008875:Middle Aged; D009055:Mouth / Q000473:pathology*; D009062:Mouth Neoplasms / Q000453:epidemiology*; D015995:Prevalence; D012907:Smoking / Q000453:epidemiology