Estimating structural change in US crop insurance experience

Keith Coble, Thomas O. Knight, Mary Frances Miller, Barry J. Goodwin, Roderick Rejesus and Ryan Boyles

Agricultural Finance Review, 2013, vol. 73, issue 1, 74-87

Abstract: Purpose - The purpose of this research is to investigate the degree to which trends and structural change may have altered crop insurance expected loss cost ratios across time. Because loss experience is used to set rates for the program, these changes can impact the premiums paid by producers and cost to the government. Design/methodology/approach - County level adjusted loss cost data was merged with climate division weather data for the 1980‐2009 period. Crop‐specific regional‐level regression models were estimated to test for trends and structural changes in the loss experience for major crops (corn, soybeans, sorghum, cotton, winter wheat, and spring wheat). Climate data was used to control for the effect of weather. Findings - For several crops and regions, a significant break point in the loss cost data is found at 1995. This is consistent with the policy changes that occurred in in the program due to the 1994 legislative change. In most instances loss experience prior to 1995 is higher than more recent years even when controlling for the effect of weather. The exception is in winter wheat where it appears recent experience may be worse rather than older experience. Originality/value - This paper provides a large‐scale assessment of the magnitude of improved crop insurance loss experience across time.

Keywords: Crop insurance; Weather; Regression analysis; Crops; Insurance (search for similar items in EconPapers)
Date: 2013
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Persistent link: https://EconPapers.repec.org/RePEc:eme:afrpps:v:73:y:2013:i:1:p:74-87

DOI: 10.1108/00021461311321320

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