Table 2.
Definitions of variables.
Variable Name | Variable Definitions |
---|---|
SI | Binary dummy variable, standing for settlement intention of the migrant. If migrant i decides to settle down in city j, it is 1; otherwise, 0. |
PM2.5 | Air quality of cities, measured using the annual average PM2.5 concentration (μg/m3) of the Chinese city where the migrant resides. |
income | Monthly personal income in the immigratory city of the migrant (10,000 yuan) |
nation | Dummy variable, the national/ethnic group of the migrant: ethnic Han = 1, others = 0. |
gender | Dummy variable, gender of the migrant: male = 1, female = 0. |
age | Age of the migrant (years). |
marriage | Dummy variable, marital status of the migrant: married = 1, unmarried = 0. |
party | Dummy variable, political identity of the migrant: China Communist Party (CCP) member or Chinese Communist Youth League (CCYL) member = 1, otherwise = 0. |
edu | Level of education, measured in terms of the educated years of the migrant: never gone to school = 0 year, primary school = 6 years, junior high school = 9 years, senior high school = 12 years, junior college = 15 years, undergraduate = 16 years, graduate or above = 19 years. |
hukou | Dummy variable, the “hukou” status of the migrant: non-agricultural “hukou” = 1, agricultural “hukou” = 0. |
time | Duration of residence in the immigratory city of the migrant (year). |
distance 1 | Dummy variable, spatial distance of migration for the migrant: migration crossing provincial border = 1, others = 0. |
distance 2 | Dummy variable, spatial distance of migration for the migrant: migration crossing city border = 1, others = 0. |
distance 3 | Dummy variable, spatial distance of migration for the migrant: migration crossing county border = 1, others = 0. |
reason | Dummy variable, reason for migration for the migrant: economic purpose (work or business) = 1, non-economic purpose (trailing family member, marriage, or other reasons) = 0. |
third | The proportion of tertiary industries in the city where the migrant resides in (%), expressed as the ratio between output value of the tertiary industry and the GDP. |
trade | Dependence degree on the trade of the city where the migrant resides in (%), expressed as the ratio of the total export and import volumes to the GDP. |
pgdp | Per capita GDP of the city where the migrant resides in (10,000 yuan). |
gdpr | GDP growth rate of the city where the migrant resides in (10,000 yuan). |