Table 8 Results of variance inflation factor of independent variables for both Model I and II
Environmental–social–economic variables | Variance inflation factor | Control and EEG dummy variables | Variance inflation factor |
|---|---|---|---|
Model I.1: \(BP=ln\left(BPI\right)+ln\left(AE\right)+ln\left(DI\right)+ln\left(GN\right)+ln\left(LP\right)+ln\left(PPAP\right)+City\) | |||
ln(BPI) | 1.77 | City | 2.88 |
ln(AE) | 3.15 | \({\mathrm{EEG}}_{\mathrm{II}}\) | – |
ln(DI) | 3.42 | \({\mathrm{EEG}}_{\mathrm{III}}\) | – |
ln(GN) | 1.31 | \({\mathrm{EEG}}_{\mathrm{IV}}\) | – |
ln(LP) | 2.30 | ||
ln(PPAP) | 2.22 | ||
Model I.2: \(ln(IC)=ln\left(BPI\right)+ln\left(AE\right)+ln\left(DI\right)+ln\left(GN\right)+ln\left(LP\right)+ln\left(PPAP\right)+City\) | |||
ln(BPI) | 1.16 | City | 1.54 |
ln(AE) | 2.63 | \({\mathrm{EEG}}_{\mathrm{II}}\) | – |
ln(DI) | 3.25 | \({\mathrm{EEG}}_{\mathrm{III}}\) | – |
ln(GN) | 1.08 | \({\mathrm{EEG}}_{\mathrm{IV}}\) | – |
ln(LP) | 1.21 | ||
ln(PPAP) | 1.81 | ||
Model II.1: \(BP=ln\left(BPI\right)+ln\left(AE\right)+ln\left(DI\right)+ln\left(GN\right)+ln\left(LP\right)+ln\left(PPAP\right)+City+EEG\) | |||
ln(BPI) | 1.81 | City | 3.09 |
ln(AE) | 3.74 | \({\mathrm{EEG}}_{\mathrm{II}}\) | 2.89 |
ln(DI) | 6.75 | \({\mathrm{EEG}}_{\mathrm{III}}\) | 5.12 |
ln(GN) | 1.39 | \({\mathrm{EEG}}_{\mathrm{IV}}\) | 5.40 |
ln(LP) | 2.50 | ||
ln(PPAP) | 3.19 | ||
Model II.2: \(ln(IC)=ln\left(BPI\right)+ln\left(AE\right)+ln\left(DI\right)+ln\left(GN\right)+ln\left(LP\right)+ln\left(PPAP\right)+City+EEG\) | |||
ln(BPI) | 1.20 | City | 1.70 |
ln(AE) | 3.14 | \({\mathrm{EEG}}_{\mathrm{II}}\) | 4.34 |
ln(DI) | 5.21 | \({\mathrm{EEG}}_{\mathrm{III}}\) | 8.01 |
ln(GN) | 1.11 | \({\mathrm{EEG}}_{\mathrm{IV}}\) | 5.13 |
ln(LP) | 1.32 | ||
ln(PPAP) | 2.73 | ||