BioMed Research International / 2014 / Article / Tab 2

Research Article

Allele Frequency of ABO Blood Group Antigen and the Risk of Esophageal Cancer

Table 2

Chi-square test value and significance of ABO blood group and Rh status.

Cases * control ( )ABO blood groupRh status
test value test value

All20.2960.000113.9640.0001
Male9.6110.02215.4840.0191
Female17.1770.00068.8740.0028
Site of cancer
Case * control (%)
 Upper1.3480.7170.7850.375
 Middle2.34470.4842.7910.094
 Lower12.060.0074.2230.039

Degree of freedom = 1.