Table 2 Descriptive statistical results of main variables.
Type | Variable name | Descriptions and unit | Mean | Std dev | |
|---|---|---|---|---|---|
Dependent variables | Life happiness(LH) | 1 = Very unhappy ~ 5 = Very happy | 3.699 | 0.955 | |
Physical health(PH) | 1 = Very unhealthy ~ 5 = Very healthy | 3.261 | 1.093 | ||
Explanatory variable | Coal-to-gas transition(CTGT) | 0 = No, 1 = Yes | 0.365 | 0.482 | |
Individual characteristics | Gender | 0 = Male, 1 = Female | 0.477 | 0.500 | |
Age | Year | 51.46 | 16.18 | ||
Educational attainment | 1 = illiterate ~ 6 = bachelor degree or above | 3.065 | 1.321 | ||
Marital statu | 0 = Unmarried, 1 = Married | 0.784 | 0.411 | ||
Household registration | 0 = Agriculture, 1 = Urban | 0.598 | 0.490 | ||
Household characteristics | Total household income | Ten thousand CNY | 7.899 | 18.98 | |
Household size | People | 2.812 | 1.388 | ||
Total household expenditure | Ten thousand CNY | 4.649 | 9.780 | ||
Cognitive characteristics | Varying pollution | 1 = Strongly disagree ~ 5 = Strongly agree | 3.866 | 0.693 | |
Make economic sacrifices | 1 = Strongly disagree ~ 5 = Strongly agree | 3.695 | 0.844 | ||
Regional characteristics | Economic development level | Gross regional product (100 million yuan) | 10.21 | 0.592 | |
Infrastructure quality | Highway mileage (ten thousand kilometers) | 15.88 | 9.122 | ||
Energy prices | Price of gas(RMB/m3) | 1.796 | 0.208 | ||
Energy accessibility | Total gas production (100 million cubic meters) | 43.05 | 100.4 | ||
Energy supply stability | Total gas supply (100 million cubic meters) | 52.76 | 43.45 | ||
Regional dummy variables | East region | 0 = No, 1 = Yes | 0.380 | 0.485 | |
Central region | 0 = No, 1 = Yes | 0.241 | 0.428 | ||
West region | 0 = No, 1 = Yes | 0.235 | 0.424 | ||
Mechanism variables | ISE | Per capita disposable income for all residents | Ten thousand CNY | 2.949 | 1.340 |
Per capita disposable income for urban residents | Ten thousand CNY | 3.772 | 1.172 | ||
Per capita disposable income for rural residents | Ten thousand CNY | 1.563 | 0.551 | ||
Theil index | The income gap between individuals or regions | 0.0736 | 0.0334 | ||
CAE | Investment in energy sector | Hundred million yuan | 1052 | 738.6 | |
Investment in gas industry | Hundred million yuan | 59.92 | 76.83 | ||
Investment in electricity supply, steam, and hot water | Hundred million yuan | 754.4 | 540.8 | ||
IUE | Primary industries | Ten thousand people | 10.66 | 0.904 | |
Secondary industries | Ten thousand people | 11.68 | 0.832 | ||
Tertiary industries | Ten thousand people | 13.13 | 0.766 | ||
Industrial structure | Value of tertiary industry/Secondary industry | 1.625 | 1.021 | ||
Labor force quality metric | Employed persons (ten thousand) take logarithm | 7.782 | 0.623 | ||
Industrial agglomere degree | Employed persons/administrative area (10,000 persons/square kilometers) | 0.039 | 0.054 | ||
EIE | Sulfur dioxide emissions | Ten thousand tons | 2.927 | 1.084 | |
Nitrogen oxide emissions | Ten thousand tons | 3.616 | 0.590 | ||
Soot and dust emissions | Ten thousand tons | 2.909 | 0.926 | ||
Chemical oxygen emissions | Ten thousand tons | 36.29 | 21.34 | ||
Total nitrogen emissions | Ten thousand tons | 7.924 | 4.362 | ||
Total phosphorus emissions | Ten thousand tons | 0.428 | 0.244 | ||
Regulation Variable | Natural gas pipeline accessibility (NGPA) | 1 = Zero distance, supply directly to the household ~ 5 = Very far, over 10 km | 3.334 | 1.421 | |
