@article{ref1,
title="Late post-concussional symptoms in traumatic head injury. An analysis of frequency and risk factors",
journal="Acta neurochirurgica",
year="1987",
author="Edna, T. H. and Cappelen, J.",
volume="86",
number="1-2",
pages="12-17",
abstract="During follow-up of 485 adult patients with traumatic head injury, 51% of the patients reported new post-concussional symptoms after an observation period of 3-5 years (mean 4.0 years). Most data, including the level of consciousness on admission, length of post-traumatic amnesia and days of hospitalization were poor parameters for predicting which patients would suffer late complications. A few variables were statistically of predictive importance: Sex, repeated head injury and skull fracture. Age was a risk factor for multiple complaints.<p /><p>Language: en</p>",
language="en",
issn="0001-6268",
doi="",
url="http://dx.doi.org/"
}