title: Risk factors for nonmelanoma skin cancer in Taubaté, São Paulo, Brazil: a case-control study.
abstract: OBJECTIVE
  To identify factors associated with non-melanoma skin cancer in the city of Taubaté, São Paulo, Brazil.
  
  
  METHODS
  Hospital-based case-control study with individuals residing in Taubaté, treated between January 2005 and December 2006. The subjects were matched 1:1 according to gender and age. Age, gender, phototype, European descent, time of residence, sun exposure, time (in years), number of hours and time of occupational and non-occupational sun exposure, photoprotection, family history and photodamage were independent variables. A hierarchical logistic regression was used at three levels. The model adjustment was performed using the Hosmer-Lemeshow test and its accuracy was verified by ROC curve. The significance level was p < 0.05.
  
  
  RESULTS
  There were 132 cases and 132 controls. Phototype with OR = 3.14 (95% CI 1.79-5.49), hours of occupational 1.76 (1.04-2.99) and non-occupational sun exposure 1.80 (0.98-3.29) and family history 2.10 (1.13-3.93) were the variables in the final model. Hosmer-Lemeshow test, p = 0.97. Accuracy 70% (95% CI 63-76).
  
  
  CONCLUSIONS
  We concluded that fair skin, family history and occupational and non-occupational sun exposure were associated with non-melanoma skin cancer in Taubaté-São Paulo.
authors.affiliation: Departamento de Medicina, Universidade de Taubaté, Brazil. dermagica@uol.com.br
authors.forename: Flávia Regina
authors.initials: FR
authors.lastname: Ferreira
authors.forename: Luiz Fernando Costa
authors.initials: LF
authors.lastname: Nascimento
authors.forename: Osmar
authors.initials: O
authors.lastname: Rotta
mesh_terms: D000328:Adult; D000367:Age Factors; D000368:Aged; D000369:Aged, 80 and over; D001938:Brazil; D002280:Basal Cell Carcinoma / Q000209:etiology*; D002294:Carcinoma, Squamous Cell / Q000209:etiology*; D016022:Case-Control Studies; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D012372:ROC Curve; D012306:Risk; D012737:Sex Factors; D012878:Skin Neoplasms / Q000209:etiology*; D013472:Sunlight / Q000009:adverse effects; D013997:Time Factors