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© 1987 Oxford University Press

research-article

Correlation between High Salt Intake and Mortality Rates for Oesophageal and Gastric Cancers in Henan Province, China

JIAN-BANG LU and YU-MIN QIN

Department of Epidemiology, Henan Tumor Institute Zhengzhou, Henan Province, China

This paper concerns the analysis of the rank correlation between salt quantity sold (SQS) to the Henan inhabitants from 1964–66, 1974–76 and their mortality rates for oesophageal cancer and gastric cancer in 1974–76. Both sets of data were in agreement with each other, and were consistent with the geographical distribution of these two diseases. Correlation coefficients derived from such analysis were as follows: oesophageal cancer in males—0.61 (p<0.01), and in females—0.47 (p<0.01); gastric cancer in males—0.63 (p<0.01), and in females—0.54 (p<0.01). SQS was positively correlated with mortality rates for oesophageal cancer and gastric cancer whereas it was not correlated with cancers of the liver, lung cancer and leukaemia in mates and cervical cancer in females. There was no significant difference between the relevant parameters of the high incidence area and those of the low incidence area. These findings show that salt intake such as salty vegetables and cured meat might be one of the risk factors inducing oesophageal and gastric cancers.

Received 1 May 1986


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