| VARIABLES | Urease positive (n = 91) | Urease negative (n = 46) | ||
| n | % | n | % | |
| Positive Ag (n = 103) | 85 | 82 | 6 | 17 |
| Negative Ag (n = 34) | 18 | 18 | 28 | 83 |
| TOTAL | 91 | 100 | 46 | 100 |