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A comment on evaluating the cost-effectiveness of armored tactical wheeled vehicles

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  • Chris Rohlfs
  • Ryan Sullivan

Abstract

This comment discusses the pros and cons of the methodology and data used in our previous study on the cost-effectiveness of armor on Tactical Wheeled Vehicles (TWVs), and responds to recent critiques by Franz Gayl. In our previous article, we evaluated the large-scale Army policies to replace relatively light Type 1 Tactical Wheeled Vehicles (TWVs) with moderately protected Type 2 variants, and later to replace Type 2s with heavily protected Type 3s. We find that the switch from Type 2 to Type 3 TWVs did not appreciably reduce fatalities and were not cost-effective. Mr. Gayl contends that the data and choice of control variables used in our original study negatively bias our findings for Type 3 TWVs. We defend our previous conclusions and argue that Gayl's suggested approach of focusing on deaths per insurgent attack fails to account for effects of the vehicles on when, where, and how attacks occurred. Our methodology does not suffer from this bias and measures effects on total unit casualties rather those incurred per attack . We explain that our estimates are stable across many specifications and are not sensitive to the choice of controls as Gayl suggests.

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  • Chris Rohlfs & Ryan Sullivan, 2013. "A comment on evaluating the cost-effectiveness of armored tactical wheeled vehicles," Defence and Peace Economics, Taylor & Francis Journals, vol. 24(5), pages 485-494, October.
    • Handle: RePEc:taf:defpea:v:24:y:2013:i:5:p:485-494
    DOI: 10.1080/10242694.2013.816093
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    References listed on IDEAS

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    1. Franz J. Gayl, 2013. "Incomplete Rohlfs--Sullivan Analysis Of The Cost-Effectiveness Of Armored Tactical Wheeled Vehicles For Overseas Us Army Operations," Defence and Peace Economics, Taylor & Francis Journals, vol. 24(5), pages 465-484, October.
    2. Chris Rohlfs & Ryan Sullivan, 2013. "The Cost-Effectiveness Of Armored Tactical Wheeled Vehicles For Overseas Us Army Operations," Defence and Peace Economics, Taylor & Francis Journals, vol. 24(4), pages 293-316, August.
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    Cited by:

    1. Chris Rohlfs & Ryan Sullivan & Thomas J. Kniesner, 2016. "Reducing risks in wartime through capital-labor substitution: Evidence from World War II," Journal of Risk and Uncertainty, Springer, vol. 52(2), pages 163-190, April.

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