Table 5.
Prevalence | Sensitivity | Specificity | PPV | NPV | Accuracy | |
---|---|---|---|---|---|---|
GerdQ vs. Endoscopy | 43.65 | 74.55 | 73.24 | 68.33 | 78.79 | 73.81 |
GerdQ vs. pH-metry | 49.30 | 67.14 | 72.22 | 70.15 | 69.33 | 69.72 |
GerdQ vs. Endoscopy + pH-metry | 71.43 | 71.67 | 72.22 | 86.58 | 50.49 | 71.83 |
Prior diagnosis vs. Endoscopy | 43.65 | 53.64 | 71.83 | 59.60 | 66.67 | 63.89 |
PPV, positive predictive value; NPV, negative predictive value; GerdQ, gastroesophageal reflux disease questionnaire. Data are presented as %.