Simple generalised estimating equation model: previous year’s ILAE grade
| Estimated proportion of patients who undergo a seizure (95% CI) | |
| Previous year’s ILAE grade | |
| 1 | 0.049 (0.041 to 0.057) |
| 2 | 0.113 (0.091 to 0.140) |
| ≥3 | 0.876 (0.856 to 0.894) |
| Highest ILAE grade in previous 2 years | |
| 1 | 0.035 (0.029 to 0.042) |
| 2 | 0.092 (0.072 to 0.116) |
| ≥3 | 0.811 (0.782 to 0.836) |
| Highest ILAE grade in previous 3 years | |
| 1 | 0.024 (0.019 to 0.030) |
| 2 | 0.078 (0.060 to 0.101) |
| ≥3 | 0.764 (0.730 to 0.795) |
ILAE, The International League against Epilepsy.