TABLE 1.

Demographics table

Characteristic	FCD patients, n = 580
Age at scan, median years (IQR)	19.0 (11.0–31.3)
Sex, female:male	281:298
Age at onset, median years (IQR)	6.0 (2.5–12.0)
Ever reported MRI‐negative	188/580 (32%)
Duration of epilepsy, median years (IQR)	10.4 (4.9–19.0)
Surgery performed	423/580 (73%)
Histopathology available	380/580 (66%)
Outcome available	275/580 (47%)
Follow‐up time, median years (IQR)	2.0 (1.3–3.4)

Abbreviations: FCD, focal cortical dysplasia; IQR, interquartile range; MRI, magnetic resonance imaging.