Further Examination of Post-Traumatic Amnesia and Post-Coma Disturbance as Non-Linear Predictors of Outcome After Head Injury

Catherine Haslam, Jennifer Batchelor, Michael R. Fearnside, S. Alexander Haslam, Simon Hawkins

Research output: Contribution to journalArticleResearchpeer-review

Abstract

The relationship between early neurological variables and cognitive outcome was investigated in a group of 77 severely head-injured patients following C. Haslam et al. (1994). At the time of admission, patients were assessed on 7 neurological indices, including durations of post-traumatic amnesia (PTA) and post-coma disturbance (PCD), the latter defined as the period between emergence from coma and end of PTA. PTA and PCD were transformed to address their non-linearity. Two years later, patients underwent examination on selected psychological measures. Recent memory was best predicted by transformed PTA, and speed of information processing was best predicted by transformed PCD. Prediction of both psychological factors was also improved by taking into account surgical evacuation of an extradural hematoma. Findings are consistent with research demonstrating the utility of transformed variables and PCD in prediction of cognitive outcome.

LanguageEnglish
Pages599-605
Number of pages7
JournalNeuropsychology
Volume9
Issue number4
Publication statusPublished - Oct 1995

Fingerprint

Post-Head Injury Coma
Amnesia
Craniocerebral Trauma
Coma
Psychology
Patient Admission
Automatic Data Processing
Hematoma
Head
Research

Cite this

Haslam, Catherine ; Batchelor, Jennifer ; Fearnside, Michael R. ; Haslam, S. Alexander ; Hawkins, Simon. / Further Examination of Post-Traumatic Amnesia and Post-Coma Disturbance as Non-Linear Predictors of Outcome After Head Injury. In: Neuropsychology. 1995 ; Vol. 9, No. 4. pp. 599-605.
@article{987a5575016649d2aa827171a1817c01,
title = "Further Examination of Post-Traumatic Amnesia and Post-Coma Disturbance as Non-Linear Predictors of Outcome After Head Injury",
abstract = "The relationship between early neurological variables and cognitive outcome was investigated in a group of 77 severely head-injured patients following C. Haslam et al. (1994). At the time of admission, patients were assessed on 7 neurological indices, including durations of post-traumatic amnesia (PTA) and post-coma disturbance (PCD), the latter defined as the period between emergence from coma and end of PTA. PTA and PCD were transformed to address their non-linearity. Two years later, patients underwent examination on selected psychological measures. Recent memory was best predicted by transformed PTA, and speed of information processing was best predicted by transformed PCD. Prediction of both psychological factors was also improved by taking into account surgical evacuation of an extradural hematoma. Findings are consistent with research demonstrating the utility of transformed variables and PCD in prediction of cognitive outcome.",
author = "Catherine Haslam and Jennifer Batchelor and Fearnside, {Michael R.} and Haslam, {S. Alexander} and Simon Hawkins",
year = "1995",
month = "10",
language = "English",
volume = "9",
pages = "599--605",
journal = "Neuropsychology",
issn = "0894-4105",
publisher = "American Psychological Association Inc.",
number = "4",

}

Further Examination of Post-Traumatic Amnesia and Post-Coma Disturbance as Non-Linear Predictors of Outcome After Head Injury. / Haslam, Catherine; Batchelor, Jennifer; Fearnside, Michael R.; Haslam, S. Alexander; Hawkins, Simon.

In: Neuropsychology, Vol. 9, No. 4, 10.1995, p. 599-605.

Research output: Contribution to journalArticleResearchpeer-review

TY - JOUR

T1 - Further Examination of Post-Traumatic Amnesia and Post-Coma Disturbance as Non-Linear Predictors of Outcome After Head Injury

AU - Haslam, Catherine

AU - Batchelor, Jennifer

AU - Fearnside, Michael R.

AU - Haslam, S. Alexander

AU - Hawkins, Simon

PY - 1995/10

Y1 - 1995/10

N2 - The relationship between early neurological variables and cognitive outcome was investigated in a group of 77 severely head-injured patients following C. Haslam et al. (1994). At the time of admission, patients were assessed on 7 neurological indices, including durations of post-traumatic amnesia (PTA) and post-coma disturbance (PCD), the latter defined as the period between emergence from coma and end of PTA. PTA and PCD were transformed to address their non-linearity. Two years later, patients underwent examination on selected psychological measures. Recent memory was best predicted by transformed PTA, and speed of information processing was best predicted by transformed PCD. Prediction of both psychological factors was also improved by taking into account surgical evacuation of an extradural hematoma. Findings are consistent with research demonstrating the utility of transformed variables and PCD in prediction of cognitive outcome.

AB - The relationship between early neurological variables and cognitive outcome was investigated in a group of 77 severely head-injured patients following C. Haslam et al. (1994). At the time of admission, patients were assessed on 7 neurological indices, including durations of post-traumatic amnesia (PTA) and post-coma disturbance (PCD), the latter defined as the period between emergence from coma and end of PTA. PTA and PCD were transformed to address their non-linearity. Two years later, patients underwent examination on selected psychological measures. Recent memory was best predicted by transformed PTA, and speed of information processing was best predicted by transformed PCD. Prediction of both psychological factors was also improved by taking into account surgical evacuation of an extradural hematoma. Findings are consistent with research demonstrating the utility of transformed variables and PCD in prediction of cognitive outcome.

UR - http://www.scopus.com/inward/record.url?scp=0028884002&partnerID=8YFLogxK

M3 - Article

VL - 9

SP - 599

EP - 605

JO - Neuropsychology

T2 - Neuropsychology

JF - Neuropsychology

SN - 0894-4105

IS - 4

ER -