The aim of this study was the detection of helicobacter pylori (HP)
infection and estimation of this
infection relationship with age, gender,
blood groups and Rhesus factor, as well as the assessment of the accuracy of the method. A total of 227 patients with
gastritis were examined. Blood ABO groups and Rh positivity were determined using standard tests.
Infection by HP was proved by (14)C-urea breath test and gastric biopsy. Patients were aged 20-81 years (X=51.7 years) and the presence of HP was not related to the age (P>0.05). From the total number of patients, 25/69 males and 68/158 females were HP positive. There was no significant difference between genders and HP
infection (P>0.05). From the 227 investigated patients, 69 (30%) belonged to
blood group O, 96 (42%) to A, 40 (18%) to B and 22 (10%) to AB. HP was detected in 27/69 patients with
blood group O, 45/96 patients with
blood group A, 16/40 patients with
blood group B and 5/22 patients with
blood group AB. There was no statistically significant difference (P>0.05) in the incidence of HP
infection between these groups (proving that HP
infection did not depend upon the
blood groups). Also, there was no significant correlation between the presence of particular
blood group in HP+ patients related to the reported frequency of the
blood groups in Serbian population (0--38%, A--42%, B--15%, AB--5%). HP was found in 16/36 Rh- and in 77/191 Rh+ patients without statistical difference (P>0.05). Also, there was no significant correlation of the presence of the
Rh factor in the HP positive patients to the frequency of the
Rh factor in the Serbian population (84% Rh+ and 16% Rh-). The basic value of the HP+ test was slightly, but not significantly lower in comparison to the HP- patients (P>0.05). On the contrary, test values showed a highly significant difference (P<0.01) in HP+ and HP- patients. In conclusion, in adults HP
infection does not depend upon the patient's age, gender,
blood group type or
Rh factor. In clinical terms, there were 93 true positive (TP), 129 true negative (TN), 5 false negative (FN) and 0 false positive (FP) patients. Sensitivity of the method was 94.9%, specificity 100%, positive predictive value 100%, negative predictive value 96.3% and accuracy 97.8%.