TABLE 2.
Frequencies of three antibodies to H. pylori in 41 sera from H. pylori-colonized patients,a with or without gastric ulcers,b and abilities of the antibodies to predict ulcers
| Immunoreactive band (kDa) | Prevalence (%) of antibodies in patientsc
|
Performance index (%)d | |
|---|---|---|---|
| Ulcer (n = 12) | No ulcer (n = 29) | ||
| 125 | 10 (83.3) | 18 (62.1) | 51 |
| 87 | 10 (83.3) | 14 (48.3) | 61 |
| 35 | 12 (100.0) | 14 (48.3) | 66 |
a
Based on urease assay, direct examination, or culture.
b
Based on endoscopy.
c
The antibodies to the three antigens listed were significantly more frequent in patients with ulcers than in nonulcerous patients (chi-square test; P ≤ 0.05).
d
Percentage of patients correctly classified [i.e., (number of true positive + number of true negative)/number of patients].