[Dietary factors and oral cancer: a case-control study in Greater Metropolitan São Paulo, Brazil].
Dietary factors associated with oral cancer were investigated in a case-control hospital-based study in the city of São Paulo, Brazil, from 1998 to 2002. A total of 835 subjects, 366 with histologically confirmed incident cases of oral-cavity or pharyngeal cancer and 469 controls participated in the study. Dietary data were collected with a food frequency questionnaire (FFQ). Odds ratios (OR) and 95% confidence intervals (95%CI) were obtained from unconditional logistic regression, adjusted for potential confounders. Inverse associations with risk of oral cancer were found for the highest intake of beans, OR = 0.37 (95%CI: 0.22-0.64), raw vegetables, OR = 0.51 (95%CI: 0.29-0.93) and the intermediate tertile of rice and pasta intake, OR = 0.56 (95%CI: 0.38-0.83). Positive associations were observed for the highest intake of eggs, OR = 1.84 (95%CI: 1.23-2.75), potatoes, OR = 2.22 (95%CI: 1.53-3.25), and milk, OR= 1.80 (95%CI: 1.09-2.98). Some traditional Brazilian foods like rice and beans emerged as protective factors against oral cancer, independently of other risk factors.
Marchioni
Dirce Maria Lobo
DM
Faculdade de Saúde Pública, Universidade de São Paulo, Avenida Dr. Arnaldo 715, São Paulo, SP 01246-904, Brazil. marchioni@usp.br
Fisberg
Regina Mara
RM
Góis Filho
José Francisco de
JF
Kowalski
Luiz Paulo
LP
Carvalho
Marcos Brasilino de
MB
Abrahão
Márcio
M
Latorre
Maria do Rosario Dias de Oliveira
Mdo R
Eluf Neto
José
J
Wünsch-Filho
Victor
V
D000328:Adult; D017677:Age Distribution; D000368:Aged; D000428:Alcohol Drinking / Q000009:adverse effects; D001938:Brazil / Q000453:epidemiology; D004032:Diet; D004034:Diet Surveys; D004812:Epidemiologic Methods; D007887:Fabaceae; D005247:Feeding Behavior; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D009062:Mouth Neoplasms / Q000453:epidemiology* / Q000209:etiology / Q000517:prevention & control; D012275:Oryza; D010610:Pharyngeal Neoplasms / Q000453:epidemiology* / Q000209:etiology / Q000517:prevention & control; D017678:Sex Distribution; D012907:Smoking / Q000009:adverse effects; D012959:Socioeconomic Factors; D014505:Urban Population