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Interrater reliability of Engel, International League Against Epilepsy, and McHugh seizure outcome classifications following vagus nerve stimulator implantation

Interrater reliability of Engel, International League Against Epilepsy, and McHugh seizure outcome classifications following vagus nerve stimulator implantation
Interrater reliability of Engel, International League Against Epilepsy, and McHugh seizure outcome classifications following vagus nerve stimulator implantation
OBJECT: Interrater reliability as measured by the kappa (?) statistic is a widely used and valuable tool to measure the robustness of a scoring system. Seizure frequency reduction is a central outcome measure following vagus nerve stimulation (VNS). A specific VNS scoring system has been proposed by McHugh, but its interrater reliability has not been tested. The authors assessed its interrater reliability and compared it with that of the Engel and International League Against Epilepsy (ILAE) systems.

METHODS: Using the Engel, ILAE, and McHugh scoring systems, 3 observers independently rated the medical records of children who had undergone vagus nerve stimulator implantation between January 2001 and April 2011 at the Southampton University Hospital. The interrater agreements were then calculated using the ? statistic.

RESULTS: Interrater reliability for the McHugh scale (?0.693) was very good and was superior to those of the Engel (?0.464) and ILAE (?0.491) systems for assessing outcome in patients undergoing VNS.

CONCLUSIONS: The authors recommend considering the McHugh scoring system when assessing outcomes following VNS.
226-229
Rodgers, W.P.
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Durnford, A.J.
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Kirkham, F.J.
0a186197-cb7a-4467-9d27-45ae90b30168
Whitney, A.
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Mullee, M.A.
fd3f91c3-5e95-4f56-8d73-260824eeb362
Gray, W.P.
e0ba5a65-bd74-4a4f-b640-5abf64fbb377
Rodgers, W.P.
64de5222-6db9-4f88-b484-b8f56d8f19ab
Durnford, A.J.
f1f6807c-426d-4ddb-a9d2-0a8a6a0bdc84
Kirkham, F.J.
0a186197-cb7a-4467-9d27-45ae90b30168
Whitney, A.
e98cdee2-33d2-41d9-bbd4-8ba44e4b537b
Mullee, M.A.
fd3f91c3-5e95-4f56-8d73-260824eeb362
Gray, W.P.
e0ba5a65-bd74-4a4f-b640-5abf64fbb377

Rodgers, W.P., Durnford, A.J., Kirkham, F.J., Whitney, A., Mullee, M.A. and Gray, W.P. (2012) Interrater reliability of Engel, International League Against Epilepsy, and McHugh seizure outcome classifications following vagus nerve stimulator implantation. Journal of Neurosurgery Paediatrics, 10 (3), 226-229. (doi:10.3171/2012.6.PEDS11424). (PMID:22816604)

Record type: Article

Abstract

OBJECT: Interrater reliability as measured by the kappa (?) statistic is a widely used and valuable tool to measure the robustness of a scoring system. Seizure frequency reduction is a central outcome measure following vagus nerve stimulation (VNS). A specific VNS scoring system has been proposed by McHugh, but its interrater reliability has not been tested. The authors assessed its interrater reliability and compared it with that of the Engel and International League Against Epilepsy (ILAE) systems.

METHODS: Using the Engel, ILAE, and McHugh scoring systems, 3 observers independently rated the medical records of children who had undergone vagus nerve stimulator implantation between January 2001 and April 2011 at the Southampton University Hospital. The interrater agreements were then calculated using the ? statistic.

RESULTS: Interrater reliability for the McHugh scale (?0.693) was very good and was superior to those of the Engel (?0.464) and ILAE (?0.491) systems for assessing outcome in patients undergoing VNS.

CONCLUSIONS: The authors recommend considering the McHugh scoring system when assessing outcomes following VNS.

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More information

Published date: 20 July 2012
Organisations: Primary Care & Population Sciences

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Local EPrints ID: 352815
URI: http://eprints.soton.ac.uk/id/eprint/352815
PURE UUID: 6c9a90fd-ed02-4de4-b39a-c0a4b83805cf

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Date deposited: 21 May 2013 11:13
Last modified: 08 Nov 2021 23:57

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Contributors

Author: W.P. Rodgers
Author: A.J. Durnford
Author: F.J. Kirkham
Author: A. Whitney
Author: M.A. Mullee
Author: W.P. Gray

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