Table 2.

Descriptive statistics of selected variables.

Variable name	Full sample (N = 812)		With insurance (N = 114)		Without insurance (N = 698)		t tests
	Mean	SD	Mean	SD	Mean	SD
Respondent has an earthquake insurance	0.144	0.347
Socio-demographics
Age	40.507	15.909	41.377	16.931	40.365	15.732	1.011***
Gender	0.260	0.439	0.307	0.461	0.252	0.434	0.055***
Ethnicity: Hispanic	0.054	0.226	0.070	0.256	0.052	0.221	0.019***
Race: White	0.820	0.384	0.807	0.395	0.822	0.382	-0.015*
Race: African American or Black	0.036	0.186	0.018	0.131	0.039	0.193	-0.021***
Race: American Indian	0.081	0.273	0.070	0.256	0.083	0.276	-0.013**
With insurance (N = 114)Race: Asian	0.017	0.130	0.026	0.160	0.016	0.125	0.010***
Belongs to two or more races	0.036	0.186	0.053	0.223	0.033	0.179	0.019***
Democrat	0.289	0.454	0.219	0.414	0.301	0.459	-0.082***
Republican	0.372	0.483	0.482	0.500	0.354	0.478	0.129***
Independent	0.339	0.473	0.298	0.458	0.345	0.475	-0.047***
Years lived in Oklahoma	8.246	9.735	10.895	10.287	7.814	9.573	3.081***
Rents the property	0.499	0.500	0.263	0.440	0.537	0.499	-0.274***
Education: less than high school	0.097	0.296	0.053	0.223	0.105	0.306	-0.052***
Education: high school	0.413	0.492	0.281	0.449	0.434	0.496	-0.153***
Education: associate degree	0.195	0.396	0.246	0.431	0.186	0.389	0.059***
Education: undergraduate degree	0.202	0.401	0.298	0.458	0.186	0.389	0.112***
Education: graduate degree	0.094	0.291	0.123	0.328	0.089	0.285	0.034***
Education: professional degree	0.262	0.440	0.122	0.327	0.285	0.451	-0.162***
Incomeless$25,000	0.294	0.456	0.289	0.454	0.295	0.456	-0.006
Inc$25000_$49,999	0.219	0.414	0.307	0.461	0.205	0.404	0.102***
Inc$50000_$74,999	0.116	0.320	0.123	0.328	0.115	0.319	0.008
Inc$75000_$99,999	0.062	0.240	0.096	0.295	0.056	0.230	0.041***
Inc$10000_$124,999	0.047	0.211	0.061	0.240	0.044	0.206	0.017***
Inc$125000_above	.048	0.211	0.096	0.007	0.056	0.002	0.041***
Respondents’ attitudes towards earthquakes in Oklahoma
No earthquake-related damage	0.773	0.419	0.773	0.419	0.782	0.413	-0.063***
Earthquake-related damage is minor	0.167	0.373	0.193	0.395	0.163	0.370	0.029***
Earthquake-related damage is moderate	0.026	0.159	0.061	0.240	0.020	0.140	0.041***
Earthquake-related damage is major	0.026	0.159	0.018	0.131	0.027	0.163	-0.010***
Other earthquake-related damage	0.007	0.086	0.009	0.093	0.007	0.084	0.002
Respondents’ attitudes toward earthquakes in Oklahoma
Abrupt stoppage of wastewater injection	0.361	0.480	0.360	0.480	0.361	0.480	-0.001
Believes wastewater injection be stopped following science	0.590	0.492	0.579	0.494	0.592	0.492	-0.013
Believes main source of revenue to OK is the oil and gas industry	0.682	0.466	0.649	0.477	0.688	0.463	-0.039***
Believes main source of jobs to OK is the oil and gas industry	0.776	0.417	0.789	0.408	0.774	0.418	0.016
Earthquake-related safety concern	0.591	0.492	0.623	0.485	0.586	0.493	0.037***
State should regulate environmental quality	0.772	0.419	0.789	0.408	0.769	0.421	0.020***
Oil and gas companies at residential property	0.193	0.644	0.421	1.184	0.156	0.493	0.265***
Works in the oil and gas industry	0.167	0.373	0.263	0.440	0.152	0.359	0.111***
Oil and gas leases revenue	0.148	0.355	0.246	0.431	0.132	0.338	0.114***
Expects to work in oil and gas companies one day	0.062	0.240	0.132	0.338	0.050	0.218	0.081***
Has experienced earthquakes in the past	0.755	0.430	0.781	0.414	0.751	0.432	0.030***
Wastewater injection is responsible for earthquakes in Oklahoma	0.570	0.495	0.605	0.489	0.564	0.496	0.041***