{ From user A Lumens, Project Belts at Fri, May 28, 1993 3:40 PM}
{ System Variables with non-default values: }
Numberwidth := 7
Samplesize := 800
Distribsize := 21
Sampletype := 1
Typechecking := 1
Checking := 1
Showundef := 0
Saveoptions := 2
Savevalues := 0
{ Non-default Time SysVar value: }
Time := [0]
Attribute Reference
Project Belts
Title: Belts
Description: Comparison of Net Benefits of Seat-Belt and Air Bag Restraints.~
~
This analysis compares 5 different policy options specified in Decision Variable "Policy Options". The key Value Variable is "Net Benefits" which depends directly or indirectly on all the others.~
~
Version with revised Lfr, technology costs, and injury effectiveness.
Author: John Graham & Max Henrion ~
~
Last Modified 2-28-90 Brian Arnold~
Rearranged diagrams 8-7-91 Brian Arnold
Date: 08-Jun-82 10:58:05
Saveauthor: A Lumens
Savedate: Fri, May 28, 1993 3:40 PM
Diagstate: 1,40,50,514,237,1
Fontstyle: Times, 14
Fileinfo: 0,-6,6752,Project Belts,Seat belt safety
Description: Effectiveness of restraint system in reducing injuries. ~
(Reduction in injury rate by users)/(Base injury rate for unprotected)~
Computed as the effectiveness in reducing fatalities, adjusted by the uncertain factor IfEfr. The adjustment of IfEfr is modified by 2*Effect*(1-Effect) so that it is large for effectiveness around 0.5 and vanishes at the extremes of effectiveness, 0 and 1.
Description: Total number of registered cars in the US (1979)
Definition: 116M
Location: 240,144
Nodesize: 52,12
Constant Annf
Title: Annualizing factor
Description: To convert initial purchase cost of technology into equivalent equal annual payments over life of car (10 years), assuming 5% real interest rate.
Definition: 1/8.108
Location: 240,184
Nodesize: 64,12
Close Unitcosts
Model Injuries_and
Title: Injuries and~
lives saved
Description: Benefits as monetary equivalent of reduction in deaths and injuries
Author: Bri Bri
Date: Fri, Aug 9, 1991 9:08 AM
Saveauthor: Bri Bri
Location: 312,96
Nodesize: 52,20
Diagstate: 1,334,187,477,195,1
Fontstyle: Palatino, 12
Variable B
Title: Benefits
Units: $/yr
Description: Benefits as monetary equivalent of reduction in deaths and injuries
Definition: Ls*Vl + Is*Vi
Location: 360,128
Nodesize: 32,12
Variable Ls
Title: Lives saved
Units: Lives/yr
Description: Total number of deaths averted by policy option
Definition: Bd*Usage*Effect
Location: 216,152
Nodesize: 44,12
Constant Bd
Title: Base deaths
Units: Deaths/yr
Description: Base case annual total US deaths to front seat car occupants, from accidents, assuming no seat belt or other restraint system. (1979)
Definition: 27225
Location: 56,152
Nodesize: 44,12
Variable Is
Title: Injuries saved
Units: /year
Description: Reduction in annual US injuries to car front seat occupants.
Definition: Bi*Usage*Ei
Location: 216,32
Nodesize: 52,12
Constant Bi
Title: Base injuries
Units: injs/year
Description: Base rate of annual injuries in US to front seat car occupants, assuming no restraint systems.
Definition: 489K
Location: 56,32
Nodesize: 48,12
Variable Vi
Title: "Cost of injury"
Units: $
Description: Average cost of an injury (medical and personal)
Definition: Vl/Ifr
Location: 224,96
Nodesize: 56,12
Variable Ifr
Title: Injury fatality ratio
Description: The number of average injuries equivalent to one death in total cost