Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Thirty days of proton pump inhibitors medication, different cut-off points 2‰, 2.5‰, 3‰, sampling time 30 min
| Cut-off | Sensitivity | Specificity | PPV | NPV | Accuracy |
| 2‰ | 92.45% | 97.96% | 98.00% | 92.31% | 95.10% |
| 2.5‰ | 92.45% | 97.96% | 98.00% | 92.31% | 95.10% |
| 3‰ | 86.79% | 97.96% | 97.87% | 87.27% | 92.16% |
