Table 2

Frequency of the different blood groups in the study population (n = 44). The figures in parentheses are the number of the patients.

Blood group

O

A

B

AB


Cases

(30) 68.1%

(6) 13.6%

(6) 13.6%

(2) 4.5%

Controls

(11) 27.3%

(28) 63.6%

(3) 6.8%

(2) 4.5%

P value

<0.05

<0.01

NS

NS


Yaghoobi et al. BMC Gastroenterology 2004 4:28   doi:10.1186/1471-230X-4-28

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