Health-related quality of life over time since resective epilepsy surgery
Article first published online: 13 JUN 2007
Copyright © 2007 American Neurological Association
Annals of Neurology
Volume 62, Issue 4, pages 327–334, October 2007
How to Cite
Spencer, S. S., Berg, A. T., Vickrey, B. G., Sperling, M. R., Bazil, C. W., Haut, S., Langfitt, J. T., Walczak, T. S. and Devinsky, O. (2007), Health-related quality of life over time since resective epilepsy surgery. Ann Neurol., 62: 327–334. doi: 10.1002/ana.21131
- Issue published online: 29 OCT 2007
- Article first published online: 13 JUN 2007
- Manuscript Accepted: 16 FEB 2007
- Manuscript Revised: 25 JAN 2007
- Manuscript Received: 11 AUG 2006
- NIH (National Institute of Neurological Disorders and Stroke). Grant Number: RO1-NS32375
Health-related quality of life (HRQOL) improves after resective epilepsy surgery, but data are limited to short follow-up in mostly retrospective reports, with minimal consideration of other potential factors that might influence HRQOL.
In a prospective multicenter study, 396 patients underwent resective epilepsy surgery. They completed the Quality of Life in Epilepsy Inventory-89 (QOLIE-89) before surgery, within 6 months, and at approximately yearly intervals after surgery. Seizure outcome was ascertained by phone calls every 3 months, and dates of postoperative seizures were chronicled. Overall HRQOL as measured by the QOLIE-89 was evaluated with respect to seizure outcome using logistic regression.
QOLIE-89 scores increased significantly at the first postoperative measurement (within 6 months after surgery) in the cohort overall; subsequent changes over time were sensitive to seizure-free and aura-free status. After adjusting for baseline scores, the corresponding postsurgical QOLIE-89 overall, and four dimension scores, increased as a function of square root of time seizure-free, and independently as a function of square root of time aura free, leveling by 2 years of stable seizure (aura) status. HRQOL was not independently related to duration of epilepsy, duration of intractable epilepsy, or continuation of medications.
HRQOL improves early after surgery, regardless of seizure outcome. Subsequent changes parallel length of time seizure free or aura free, stabilize after 2 years, and are unrelated to duration of epilepsy, duration of intractable epilepsy, or continued medication use. Ann Neurol 2007