Preserved foods and nasopharyngeal carcinoma: a case-control study among Singapore Chinese.
The association between the consumption of preserved foods in infancy, childhood and adulthood and the risk of nasopharyngeal carcinoma was investigated in a case-control study among Singapore Chinese: 200 cases (73% male) were compared with 406 hospital controls (71% male). Significantly increased risks were observed in association with frequent adult consumption of salted soy beans (OR 7.3 for consumption 4 or more times per week, compared with never), canned pickled vegetables (p = 0.01; OR 4.5 for 4 or more times per week), "sze chuan chye", a salted Chinese tuber, (OR 2.4 for 4 or more times per month) and "kiam chye", salted mustard greens (OR 2.7 for 4 or more times per week). A protective effect of high vitamin-E intake in adulthood was observed (OR 0.5 for the highest third of the control range, as compared with the lowest).
Lee
H P
HP
Department of Community, Occupational and Family Medicine, National University of Singapore.
Gourley
L
L
Duffy
S W
SW
Esteve
J
J
Lee
J
J
Day
N E
NE
D000328:Adult; D001205:Ascorbic Acid / Q000008:administration & dosage; D002338:Carotenoids / Q000008:administration & dosage; D016022:Case-Control Studies; D005260:Female; D005396:Fish Products; D005520:Food Preservatives / Q000009:adverse effects*; D006801:Humans; D008297:Male; D009303:Nasopharyngeal Neoplasms / Q000139:chemically induced*; D011247:Pregnancy; D012307:Risk Factors; D012846:Singapore; D013025:Glycine max; D014675:Vegetables; D014810:Vitamin E / Q000008:administration & dosage; D019207:beta Carotene
D005520:Food Preservatives; D019207:beta Carotene; D014810:Vitamin E; D002338:Carotenoids; D001205:Ascorbic Acid