Fig. 2: Parallel trend test.
From: Green finance policy and corporate carbon emissions: advancing corporate sustainability
a represents the difference in total, corporate carbon emissions between treatment and control groups if the GFRIPZ policy is implemented or not. b denotes the difference in direct corporate carbon emissions between treatment and control groups if the GFRIPZ policy is implemented or not. c indicates the difference in indirect corporate carbon emissions between treatment and control groups if the GFRIPZ policy is implemented or not. The vertical axis represents the regression coefficients, while the horizontal axis represents the dummy variables. Estimate refers to the regression coefficients of the above dummy variables. The 95% CI denotes the 95% confidence interval.
