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).
Department of Community, Occupational and Family Medicine, National University of Singapore.
H P
HP
Lee
L
L
Gourley
S W
SW
Duffy
J
J
Esteve
J
J
Lee
N E
NE
Day
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