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. 2015 Nov 23;7(52):87114–87123. doi: 10.18632/oncotarget.13513

Table 1. Demographic information.

Characteristics Cases (n = 602) Controls (n = 602) P value
Age (y)* 60.6±10.7 59.5±12.9 0.087
Gender, (n (%))
Male 438 (72.8) 409 (67.9) 0.067
Hypertension, (n (%))
Yes 172 (28.6) 181 (30.1) 0.569
Yes 61(10.1) 76(12.6) 0.173
Smoking, (n (%))
Smokers 128(21.3) 94 (15.6) 0.012
Residence, (n (%))
Urban 244 (47.4) 271 (52.0) 0.116
Tumor differentiation (n (%))
Depth of tumor infiltration (n (%))
Lymph node metastasis (n (%))
Localization (n (%))
Noncardia 336(55.8)

* Median (25th-75th percentiles).