ID

24255

Descripción

Traumatic brain injury (TBI) is a leading cause of death and disability. A reliable prediction of outcome on admission is of great clinical relevance. Using several large patient series for model development as available in the International Mission for Prognosis and Analysis of Clinical Trials in TBI (IMPACT) project, three prognostic models of increasing complexity (Core, Core + CT, Core + CT + Lab) were developed. They provide adequate discrimination between patients with good and poor 6 month outcomes after TBI, especially if CT and laboratory findings are considered in addition to traditional predictors. The model predictions may support clinical practice and research, including the design and analysis of randomized controlled trials. Reference: Steyerberg, E. W., Mushkudiani, N., Perel, P., Butcher, I., Lu, J., McHugh, G. S., ... & Maas, A. I. (2008). Predicting outcome after traumatic brain injury: development and international validation of prognostic scores based on admission characteristics. PLoS medicine, 5(8), e165. http://www.tbi-impact.org/?p=impact/calc

Link

http://www.tbi-impact.org/?p=impact/calc

Palabras clave

Versiones (2)
  1. 28/7/17 28/7/17 -
  2. 25/1/18 25/1/18 -
Titular de derechos de autor

Ewout Steyerberg

Subido en

28 de julio de 2017

DOI

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Licencia

Creative Commons BY-NC 3.0
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IMPACT model for 6 month outcome after TBI

Inglés

IMPACT model for 6 month outcome after TBI

1 formularios  
Core data
Descripción

Core data

Age
Descripción

Age

Tipo de datos

integer

Unidades de medida
  • years
Alias
UMLS CUI [1]
C0001779
Motor score
Descripción

Motor score

Tipo de datos

integer

Pupillary reactivity
Descripción

Pupillary reactivity

Tipo de datos

integer

CT data
Descripción

CT data

Hypoxia
Descripción

Hypoxia

Tipo de datos

integer

Hypotension
Descripción

Hypotension

Tipo de datos

integer

CT classification
Descripción

CT classification

Tipo de datos

integer

Traumatic subarachnoid hemorrhage (CT)
Descripción

Traumatic subarachnoid hemorrhage

Tipo de datos

integer

Epidural hematoma (CT)
Descripción

Epidural hematoma

Tipo de datos

integer

Sub score CT
Descripción

Sub score CT = hypoxia + hypotension + CT characteristics

Tipo de datos

integer

Lab data
Descripción

Lab data

Glucose
Descripción

Glucose

Tipo de datos

integer

Unidades de medida
  • mmol/L
Hb
Descripción

Hemoglobin

Tipo de datos

integer

Unidades de medida
  • g/dL
Sub score lab
Descripción

glucose + Hb

Tipo de datos

integer

Sum scores
Descripción

Sum scores

Sum score: core model
Descripción

Sum score core model = age + motor score + pupillary reactivity. The probability of 6 mo outcome is defined as 1 / (1+e^-LP), where LP refers to the linear predictor in a logistic regression model. LP core, mortality = -2.55 + 0.275 x sum score core. LP core, unfavorable outcome = -1.62 + 0.299 x sum score core.

Tipo de datos

integer

Sum score: extended model
Descripción

Sum score extended model = core + hypoxia + hypotension + CT characteristics. The probability of 6 mo outcome is defined as 1 / (1+e^-LP), where LP refers to the linear predictor in a logistic regression model. LP extended, mortality = -2.98 + 0.256 x (sum score core + subscore CT). LP extended, unfavorable outcome = -2.10 + 0.276 x (sum score core + subscore CT).

Tipo de datos

integer

Sum score: lab model
Descripción

Sum score lab model = core + hypoxia + hypotension + CT + glucose + Hb. The probability of 6 mo outcome is defined as 1 / (1+e^-LP), where LP refers to the linear predictor in a logistic regression model. LP lab, mortality = -3.42 + 0.216 x (sum score core + subscore CT + subscore lab). LP lab, unfavorable outcome = -2.82 + 0.257 x (sum score core + subscore CT + subscore lab).

Tipo de datos

integer

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Similar models

IMPACT model for 6 month outcome after TBI

1 formularios
Name
Tipo
Description | Question | Decode (Coded Value)
Tipo de datos
Alias
Item Group
Core data
Item
Age
integer
C0001779 (UMLS CUI [1])
Age
Code List
Age
CL Item
≤30 (0)
CL Item
30-39 (1)
CL Item
40-49 (2)
CL Item
50-59 (3)
CL Item
60-69 (4)
CL Item
70+ (5)
Item
Motor score
integer
Motor score
Code List
Motor score
CL Item
None/extension (6)
CL Item
Abnormal flexion (4)
CL Item
Normal flexion (2)
CL Item
Localizes/obeys (0)
CL Item
Untestable/missing (3)
Item
Pupillary reactivity
integer
Pupillary reactivity
Code List
Pupillary reactivity
CL Item
Both pupils reacted (0)
CL Item
One pupil reacted (2)
CL Item
No pupil reacted (4)
Item Group
CT data
Item
Hypoxia
integer
Hypoxia
Code List
Hypoxia
CL Item
Yes or suspected (1)
CL Item
No (0)
Item
Hypotension
integer
Hypotension
Code List
Hypotension
CL Item
Yes or suspected (2)
CL Item
No (0)
Item
CT classification
integer
CT classification
Code List
CT classification
CL Item
I (-2)
CL Item
II (0)
CL Item
III/IV/V/VI (2)
Item
Traumatic subarachnoid hemorrhage (CT)
integer
Traumatic subarachnoid hemorrhage
Code List
Traumatic subarachnoid hemorrhage (CT)
CL Item
Yes (2)
CL Item
No (0)
Item
Epidural hematoma (CT)
integer
Epidural hematoma
Code List
Epidural hematoma (CT)
CL Item
Yes (-2)
CL Item
No (0)
Sub score CT
Item
Sub score CT
integer
Item Group
Lab data
Item
Glucose
integer
Glucose
Code List
Glucose
CL Item
<6 (0)
CL Item
6-8.9 (1)
CL Item
9-11.9 (2)
CL Item
12-14.9 (3)
CL Item
15+ (4)
Item
Hb
integer
Hemoglobin
Code List
Hb
CL Item
<9 (3)
CL Item
9-11.9 (2)
CL Item
12-14.9 (1)
CL Item
15+ (0)
Sub score lab
Item
Sub score lab
integer
Item Group
Sum scores
Sum score core model
Item
Sum score: core model
integer
Sum score extended model
Item
Sum score: extended model
integer
Sum score lab model
Item
Sum score: lab model
integer
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