Psychology 409a, November 14, 2005

My Fifth Outline of Assigned Readings

By Yu Takebayashi

Injury Control


Francescutti, Louis Hugo and Mohammed Naseemul Hoque.  J. Peter Rothe, ed.  “Driving Lessons; Exploring systems that make traffic safer.” The University of Alberta Press.  Edmonton:200251-64.


Instructions for this activity are found at:

Instructor:  Dr.  Leon James


Concept 1:  Data collection

A.     Data collection begins at the scene of the crash, where police officers figure out crash velocity, angles of impact, and directions of force.  This information can be released into the community where people can give ideas of how to better the injury-prevention strategies.

B.     This entire model is based on the assumption that the police share crash information with the doctors, then the doctors share the data with the injury-analysis.  This will help each part to do their job, because they will be able to assess things based on information given by the other parts.

C.    This way of relying on other parts of the system for data collection is very important because they can go into the assessment with more information.  I think a doctor would be a lot better at figuring out what is wrong if they are informed of what type of accident it was, what areas of my body I injured, and what the overall scene was like.

Concept 2:  Scene activities

A.     Scene activities are what the different parts of the model do at the crash scene.  The different parts cooperate to give each other accurate information, leading to a more precise understanding of the accident.

B.     In the beginning, the police figure out who was at fault.  In the beginning, the police would mostly do the investigations on their own, but as time went by, the research team would help the police as well. 

C.    Making good observations and reporting accurate data is very important because everyone behind you in the process will make decisions based on it.  If the police make an inaccurate observation, this will get passed onto the doctors and the research team, resulting in a completely different conclusion.

Concept 3:  Sensitivity and Specificity of the Model

A.     Sensitivity:  the ability of a data-collection system to include all cases of a particular motor-vehicle collision injury

Specificity:  the ability of the system to exclude other phenomena that may be mistaken for the one being studied.

B.     In some cases, researchers missed cases in which the patients’ condition worsened after they were looked at in the trauma room.  Some of these injuries were only evident in the clinical investigation, and not when they analyzed them on-site.

C.    I think that it is pretty hard to be completely accurate when you study things like this.  An injury could come about days, weeks, months, or even years after the accident.  If someone were to have a brain injury, it would usually take awhile before it is realized that something is wrong.


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Related Weblinks: data collection and improved technologies law enforcements at accident scenes;jsessionid=DJH027ylI9fS3IU8Ke5gTAr2SUxYM0EXnAlKtWgDwv21KeBBqg1l!784801133!-949856144!9001!-1 sensitivity and specificity