Engel Epilepsy Surgery Outcome Class
Engel epilepsy-surgery outcome classification (Engel 1993): Class I free of disabling seizures, II rare disabling, III worthwhile improvement, IV no worthwhile improvement.
Open the calculator → Runs in your browser. Data leaves only if you deliberately send a problem report from the interactive tool.
Example
- Postoperative seizure outcome
- Free of disabling seizures (Class I)
Result: Engel class I — free of disabling seizures.
The tool opens with these values already filled in. Replace them with your own.
What the result means
- Class I-II
- Free of disabling seizures (I) or rare disabling seizures (II).
- Class III-IV
- Worthwhile improvement (III) or no worthwhile improvement (IV). A postoperative outcome classification, not a treatment order.
What you enter
- Postoperative seizure outcome (class)
How this is calculated
Engel J Jr, Van Ness PC, Rasmussen TB, Ojemann LM. Outcome with respect to epileptic seizures. In: Engel J Jr, ed. Surgical Treatment of the Epilepsies. 2nd ed. New York: Raven Press; 1993:609-621. Cross-mapping: Wieser HG, et al. Epilepsia. 2001;42(2):282-286. Read the source ↗
A reference and educational tool. Not medical, legal, or financial advice, and not a substitute for clinician judgment.