Traditional Cantonese diet and nasopharyngeal carcinoma risk: a large-scale case-control study in Guangdong, China

Table 4 Multivariate analyses of dietary factors*

Dietary Factors	OR^#	95%CI	P-value
Salted fish in childhood
Less than monthly(ref)	1.00
Monthly	2.42	1.65-3.54	< 0.001
Weekly or more	1.57	1.16-2.13	0.003
Salted vegetables in childhood
Less than monthly(ref)	1.00
Monthly	1.28	0.87-1.89	0.215
Weekly or more	1.81	1.37-2.40	< 0.001
Salted vegetables in adulthood
Less than monthly(ref)	1.00
Monthly	2.23	1.46-3.40	< 0.001
Weekly or more	1.79	1.19-2.68	0.005
Fresh fruits in childhood
Less than monthly(ref)	1.00
Monthly	0.31	0.20-0.47	< 0.001
Weekly or more	0.13	0.09-0.18	< 0.001
Preserved and cured meat in adulthood
Less than monthly(ref)	1.00
Monthly	8.32	5.46-12.69	< 0.001
Weekly or more	12.39	7.60-20.19	< 0.001
Herbal tea habit
Less than monthly(ref)	1.00
Monthly	0.35	0.27-0.47	< 0.001
Weekly or more	0.57	0.41-0.78	0.001
Slow-cooked soup habit
Less than monthly(ref)	1.00
Monthly	0.44	0.21-0.93	0.031
Weekly or more	0.49	0.37-0.65	< 0.001

*Logistic regression model was built by a stepwise forward method with inclusion criteria p ≤ 0.01.
Both of the dietary consumptions in childhood and adulthood were used in the multivariate analysis.
^#OR, odds ratio calculated among matched case and control groups, adjusting for sex, age, education, dialect and household type.

ISSN: 1471-2407