SF-NDI comparison (dyspeptics vs non-dyspeptics)
| SF-NDI variables | Dyspeptics (mean) | Non-dyspeptics (mean) | Difference (means) | 95% CI (difference) | P value |
| Tension/anxiety score | 10.61 | 2.75 | 7.86 | 7.34 to 8.37 | <0.0001 |
| Interference with daily activities score | 10.46 | 2.56 | 7.90 | 7.40 to 8.40 | <0.0001 |
| Disruption with regular eating/drinking score | 11.01 | 2.87 | 8.14 | 7.62 to 8.66 | <0.0001 |
| Knowledge/control disease score | 8.4 | 2.16 | 6.24 | 5.83 to 6.65 | <0.0001 |
| Interference with work score | 10.69 | 2.57 | 8.12 | 7.62 to 8.62 | <0.0001 |
| Overall score | 47.44 | 10.18 | 37.27 | 34.97 to 39.56 | <0.0001 |
SF-NDI, Short Form Nepean Dyspepsia Index.