Table 2 Summary data for measures of epileptic activity in patients.
| Duration (years) | Chalfont—GTC | Chalfont—A | Chalfont—MCJ | |
|---|---|---|---|---|
| Mean | 20.2 | 91 | 20 | 11 |
| IQR | — | 105 | 15 | 4 |
| SD | 15.2 | — | — | — |
| Range | 2–71 | 0–191 | 0–135 | 0–122 |
| Total no—GTC | Total no—A | Total no—MCJ | |
|---|---|---|---|
| Mean | 261 | 12 165 | 11 291 |
| IQR | 159 | 998 | 200 |
| SD | — | — | — |
| Range | 0–3125 | 0–182 500 | 0–182 500 |
High scores indicate severely affected.
Data are not normally distributed, except Duration.
A, absence; Chalfont, Chalfont Seizure Severity Scale; GTC, generalised tonic–clonic seizure; IQR, interquartile range; MCJ, myoclonic jerk; Total no, total number.