Multivariate risk factors for predicting major upper gastrointestinal pathology
| Variable | Parameter estimate | Odds ratio | OR CI |
| Intercept | −1.9493 | — | — |
| Age (⩾45) | 0.5401 | 1.716 | 1.331–2.221 |
| Sex (male) | 0.3360 | 1.399 | 1.089–1.801 |
| Anaemia | 0.8218 | 2.274 | 1.249–4.042 |
| Bleed | 1.0642 | 2.899 | 1.889–4.419 |
Model: probability of a major endoscopic finding = −1.9493 + (0.5401×age) + (0.3360×sex) + (0.8218×anaemia) + (1.0642×bleed), where age, sex (f/m), anaemia (n/y), and bleed (n/y) are coded 0 or 1.
OR, odds ratio; CI, confidence interval.