Table 5 Robustness test results.

From: The mediating effect of urban water system climate resilience in the impact of sponge city pilot policy on ecological welfare

Variable

(1)

(2)

(3)

Excluding the impact of other policy

Excluding the impact of Covid

Winsorization

Policy

0.0102**

0.0097**

0.0080***

(2.53)

(2.41)

(2.60)

Constant

0.5710***

0.6293***

0.3203***

(5.09)

(5.19)

(8.04)

Control variables

Yes

Yes

Yes

City FE

Yes

Yes

Yes

Year FE

Yes

Yes

Yes

Observations

3,080

2,800

3,080

R2

0.490

0.446

0.481

  1. Robust t-statistics are in brackets, and ***p < 0.01, **p < 0.05, *p < 0.1.
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