Table 4.
Relationship between referral and definitive diagnosis in upper GI conditions
| Disease Condition | Clinical (Referral) | Definitive diagnosis (Endoscopic findings) diagnosis | Sensitivity | Specificity | Positive predictive value | Negative Predictive value | |
| Disease | Disease | ||||||
| present | absent | ||||||
| n (%) | n (%) | ||||||
| Peptic ulcer | Present | 214 (24.3%) | 382 (43.3%) | ||||
| disease | Absent | 85 (9.6%) | 201 (22.8%) | 0.72 | 0.40 | 0.36 | 0.70 |
| Gastric outlet | Present | 24 (2.7%) | 26 (3.0%) | ||||
| obstruction | Absent | 37 (4.2%) | 795 (90.1%) | 0.39 | 0.97 | 0.48 | 0.96 |
| Gastritis | Present | 12 (1.4%) | 9 (1.0%) | ||||
| Absent | 297 (33.7%) | 564 (63.9%) | 0.04 | 0.98 | 0.57 | 0.66 | |
| Reflux | Present | 10 (1.1%) | 13 (1.5%) | ||||
| oesophagitis | Absent | 162 (18.4%) | 697 (79.0%) | 0.06 | 0.98 | 0.43 | 0.81 |
| Corrosive | Present | 2 (0.2%) | 1 (0.1%) | ||||
| oesophagitis | Absent | 5 (0.6%) | 874 (99.1%) | 0.29 | 1.00 | 0.67 | 0.99 |
| Cancer of the | Present | 36 (4.1%) | 26 (2.9%) | ||||
| stomach | Absent | 66 (7.5%) | 754(85.5%) | 0.35 | 0.97 | 0.58 | 0.92 |
| Oesophageal | Present | 2 (0.2%) | 5 (0.6%) | ||||
| cancer | Absent | 7 (0.8%) | 868 (98.4%) | 0.22 | 0.99 | 0.29 | 0.99 |