Table 1. Prediction Model for the Diagnosis of AP: Categories and Points.
| Parameter | Points |
|---|---|
| No. of prior AP episodes | |
| 0 | 0 |
| 1 | 1 |
| 2 | 2 |
| 3 | 3 |
| ≥4 | 4 |
| History of cholelithiasis | |
| No | 0 |
| Yes | 2 |
| Abdominal surgery in prior 2 mo | |
| No | 0 |
| Yes | −2 |
| Symptoms | |
| Epigastric pain | |
| No | 0 |
| Yes | 2 |
| Worsening severity | |
| No | 0 |
| Yes | 1 |
| Duration of pain, d | |
| <5 | 0 |
| ≥5 | −1 |
| Pain severity (of 10) | |
| Mild (0-3) | 0 |
| Moderate (4-6) | 2 |
| Severe (7-10) | 3 |
| Serum lipase level | |
| ≥3 to <10 times the ULN | 0 |
| ≥10 to <20 times the ULN | 1 |
| ≥20 times the ULN | 2 |
Abbreviations: AP, acute pancreatitis; ULN, upper limit of normal (reference range).