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VariableNameMeasurement unitAllowed valuesDescriptionAdditional notes
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InterCountyRaw measure of inter-county migrationNumericRange: 3.5-7.1Average US Intercounty migration rate, population age 1+
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MigYearYearNumericRange: 1948-2019Year (last April to this March)
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NationalEmploymentGap
US employment gapNumericRange: 10.69-11.92Natural log of (US employment minus its Hodrick-Prescott trend)
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StateEmploymentGapSD
Standard deviation of state employment gapsNumericRange: 0.97-1.11
Standard deviation of state employment gaps in each year, where state employment gaps are the natural log of (each state's employment minus its Hodrick-Prescott trend)
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NationalEmploymentGapz
Standardized National Employment Gap (mean 0, standard deviation 1)
NumericRange: -1.69-1.27Standardized National Employment Gap (mean 0, standard deviation 1)
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StateEmploymentGapz
Standardized StateEmploymentGapSD (mean 0, SD 1)
NumericRange: -1.40-1.78Standardized StateEmploymentGapSD (mean 0, SD 1)
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HPmigration
Inter-county migration after applying Hodrick-Prescott filter
NumericRange: -0.77-1.01Inter-county migration after applying Hodrick-Prescott filter
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DetrendedMigration
Inter-county migration minus its Hodrick-Prescott trend
NumericRange: 3.32-6.57Inter-county migration minus its Hodrick-Prescott trend
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