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Danielle E. Nagele and Joseph E. Trainor

experience) and 1 (at least one experience). All variables were coded using Statistical Package for the Social Sciences (SPSS). SPSS was also used for the data analysis. A multinomial logistic regression was performed to determine the relationship between the dependent variables and the independent variable. 8. Results Table 2 shows a correlation matrix of all independent and dependent variables. This matrix provides support for many but not all of our hypothesized relationships, as detailed below

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Kevin M. Simmons and Daniel Sutter

recent local FAR in assessing warning credibility, and construct multiple FARs based on different geographies and time horizons. We then include the FAR variable in a regression analysis of tornado casualties. We do not examine the link between false alarms and warning response directly, but since warning response affects casualties and our 19 yr of data include over 21 000 state tornado segments, we seek to detect an impact on response through casualties. We find a strong relationship between the

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Joseph T. Ripberger, Hank C. Jenkins-Smith, Carol L. Silva, Deven E. Carlson, and Matthew Henderson

. , Moller A. R. , and Brooks H. E. , 1999 : Storm spotting and public awareness since the first tornado forecasts of 1948 . Wea. Forecasting , 14 , 544 – 557 , doi: 10.1175/1520-0434(1999)014<0544:SSAPAS>2.0.CO;2 . Gelman, A. , and Hill J. , 2006 : Data Analysis Using Regression and Multilevel/Hierarchical Models. Cambridge University Press, 625 pp . Ginsberg, J. , Mohebbi M. H. , Patel R. S. , Brammer L. , Smolinski M. S. , and Brilliant L. , 2009 : Detecting influenza

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Jason C. Senkbeil, Meganne S. Rockman, and John B. Mason

encountered few residents over age 55 at residences or in shelters, while 25–34-year-olds were numerous ( Fig. 3 ). b. Data analysis Data analysis consisted of two approaches. Responses to open-ended questions were best summarized and discussed qualitatively. Logistic regression was also used for the purpose of predicting the likelihood of future shelter plans based on social and demographic variables. The combination of these two methods identifies specific individual approaches to changes in shelter

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Carolyn Kousky

homeowners may not be aware of the eligibility criteria to receive funds. Exploratory regression analysis indicates that aid is less likely in higher income areas and more likely as the percent of housing units that are owner occupied increases. There is no statistically significant relationship between insurance take-up rates and disaster aid. More aid is given in areas with greater insured losses, likely because it is correlated with uninsured damages. For a 1% increase in the percent of the population

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Richard W. Dixon and Todd W. Moore

tornadoes in terms of tornado-related losses. Hout et al. (2010) developed a method to assess vulnerability trends of counties within Oklahoma and northern Texas. Neither of these studies, however, incorporated any socioeconomic variables. Simmons and Sutter (2011) provided a more comprehensive assessment of tornado impacts. With the use of regression models, they determined that mobile homes, the occurrence of nocturnal tornadoes, and the occurrence of winter-season tornadoes are all statistically

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James B. Elsner, Laura E. Michaels, Kelsey N. Scheitlin, and Ian J. Elsner

trend in the city densities levels off starting in the mid-1990s, while the trend in the country densities continues upward. In fact, the country density statistically matches the city density in the most recent decade (2002–11). Differences between city and country tornado reporting trends should be taken into account when attempting to remove reporting biases. Fig . 9. Tornado report density in the city and country in 10-yr moving intervals. The trend line is a local regression of report density

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Philip L. Chaney, Greg S. Weaver, Susan A. Youngblood, and Kristin Pitts

pathlength was 54.17 km (33.66 miles) and the path width was 1.21 km (1320 yards) ( NCDC 2011 , 2012 ; National Weather Service, Huntsville 2012 ). The path ran along State Highway 75 and affected many communities in the county including Fyffe, Rainsville, Sylvania, and Cartersville. 4. Postdisaster survey methods and analysis A postdisaster survey was conducted in DeKalb County on 6–11 May 2011. The primary site for conducting the survey was a community center building (Tom Bevill Enrichment Center

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Alan W. Black and Walker S. Ashley

increased to 60% from 35% prior to installation. A regression analysis of tornado casualties illustrated that expected fatalities were 45% lower for tornadoes occurring after installation of the new radar network. Further investigation by Simmons and Sutter (2008b) determined that tornado warnings do reduce fatalities, and increased lead times for tornado warnings up to approximately 15 min reduced casualties, while longer lead times resulted in increased fatalities compared to no warning. The

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