Annual earnings in $
Natural logarighm of earnings
= 1 if earnings > 80000 and = 0 otherwise
= 1 if female and = 0 if male
Age in years
Natural logarithm of age
Age squared
Educational attainment: years of schooling
Education squared
Age times Education
Gender times age
Gender times education
Usual hours worked per week
Natural logarithm of hours
Gender times hours
1 if self-employed, 0 otherwise
1 if work for wages in private sector, otherwise
1 if work for wages in govt sector
State name
State (FIPS code)
State unemplyment rate in 2010
State income per capita in 2010
Census year
Person number in sample unit
Person weight
Relationship to household head [general version]
Census region and division
Metropolitan status
Marital status
Race [general version]
Race [detailed version]
Hispanic origin [general version]
Race: Single race identification [general version]
Any health insurance coverage
Educational attainment [general version]
Educational attainment [detailed version]
Employment status [general version]
Class of worker [general version]
Class of worker [detailed version]
Weeks worked last year, intervalled
Worked last year
Total personal income
Wage and salary income
Business and farm income, 2000
Total personal earned income