Abstract:
BACKGROUND:It is not completely clear whether there are differences in the evolution of the neuropsychological outcomes between the 2 intervention procedures (surgery and endovascular coiling) used in subarachnoid aneurysmatic hemorrhage. Some studies have investigated this topic but without completely controlling the effect of learning the tests. OBJECTIVE:To analyze our data using 2 different statistical procedures that attempt to solve this problem. METHODS:The sample consists of 70 patients who have suffered a subarachnoid hemorrhage: 40 treated by means of surgery and 30 by means of endovascular coiling. Two cognitive evaluations were performed at 4 and 12 months after the invention. Twenty-seven healthy subjects were also evaluated twice with a delay of 8 months. The data were analyzed using 2 different statistical procedures: one by Samra et al (2007) using z scores and the other by Crawford and Garthwaite (2007) using the regbuild.exe program. RESULTS:The results indicate there are no important differences between the 2 treatment groups in the evolution of the cognitive alterations. Despite an improvement in cognitive scores on repeat testing at 12 months, neither of the 2 treatment groups showed the same level of test-retest learning as healthy control subjects. CONCLUSION:The recovery of neuropsychological functions after a subarachnoid hemorrhage is similar with the 2 interventions. It is important to control the learning effect produced by the repeated administration of tests.
journal_name
Neurosurgeryjournal_title
Neurosurgeryauthors
Santiago-Ramajo S,Katati MJ,Pérez-García M,Arjona-Moron Vdoi
10.1227/NEU.0b013e3181fa2152subject
Has Abstractpub_date
2010-12-01 00:00:00pages
1497-504; discussion 1504issue
6eissn
0148-396Xissn
1524-4040pii
00006123-201012000-00015journal_volume
67pub_type
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