Original Articles
Copyright ©The Author(s) 1998.
World J Gastroenterol. Feb 15, 1998; 4(1): 45-47
Published online Feb 15, 1998. doi: 10.3748/wjg.v4.i1.45
Table 1 Gastric cancer mortality of Zhanggang Town according to the type of water supply (1/105) (1973-1990)
Type of water sourceMaleFemaleTotal
River Water176.9157.29121.05
(141/79699)1(40/69822)(181/149521)
Shallow well water112.7031.5874.85
(320/267979)(74/234356)(276/502335)
RR1.571.811.62
χ219.889.4928.79
P< 0.01< 0.01< 0.01