The proportion of ECode I and ECode II
| Total 1681 (cases) | Red | Orange | Yellow | Green |
| ECode I | ||||
| Training set (1456 to 100%) | 49 (3.39%) | 63 (4.30%) | 115 (7.92%) | 1229 (84.39%) |
| Validation set (225 to 100%) | 61 (27.11%) | 61 (27.11%) | 52 (23.11%) | 51 (22.67%) |
| Total (100%) | 110 (6.54%) | 124 (7.38%) | 167 (9.93%) | 1280 (76.15%) |
| ECode II | ||||
| Training set (1471 to 100%) | 77 (5.20%) | 110 (7.47%) | 120 (8.14%) | 1164 (24.76%) |
| Validation set (210 to 100%) | 54 (25.72%) | 52 (24.76%) | 52 (24.76%) | 52 (24.76%) |
| Total (100%) | 131 (7.79%) | 162 (9.64%) | 172 (10.23%) | 1216 (72.34%) |
Diagnoses and treatments, except symptoms such as the red flag sign and events, were only used for the first classification (ECode I). Another classification consisted of symptoms, events, diagnoses and treatment (ECode II).