Historical Disaster Exposure and Household Preparedness Across the United States.

Abstract

The study determined whether households in disaster-exposed communities were more likely to be prepared. Three measures of preparedness were created using the 2013 American Housing Survey: cumulative, adequate, and minimal preparedness. Cumulative and adequate preparedness were created based on the existing literature. Minimal preparedness measured whether households had at present food, water, access to a vehicle, and funds with which to evacuate. Disaster exposure was measured using historical FEMA disaster declarations. The various preparedness measures were regressed onto historical disaster exposure, controlling for sociodemographic factors. Across all measures of preparedness, historical disaster exposure was a statistically significant predictor of preparedness. Vulnerable households included those where children or the disabled were present. African-American headed households emerged as vulnerable only when minimal preparedness was assessed. Prior disaster exposure increased household preparedness regardless of how preparedness was defined. However, assessing minimal preparedness may better reflect the changing disaster landscape where more and more households are asked to evacuate or shelter-in-place by policy-makers.