Table 4 Results of DID estimates for each trade city group located in the border area
From: North Korea’s COVID-19 policy dilemma: epidemic prevention conflicting with trade
Light | |
|---|---|
NK-China trade cities | |
X Month -3 | -0.098***(0.016) |
X Month -2 | -0.072***(0.012) |
X Month -1 | 0.036***(0.011) |
X Month + 1 | -0.054***(0.009) |
X Month + 2 | -0.110***(0.008) |
X Month + 3 | -0.172***(0.010) |
X Month + 4 | -0.218***(0.012) |
X Month + 5 | -0.142***(0.012) |
X Month + 6 | -0.229***(0.013) |
Pyongyang | |
X Month -3 | -0.026*(0.015) |
X Month -2 | -0.011(0.010) |
X Month -1 | -0.050***(0.010) |
X Month + 1 | -0.013(0.009) |
X Month + 2 | -0.025***(0.007) |
X Month + 3 | 0.005(0.008) |
X Month + 4 | -0.023**(0.010) |
X Month + 5 | -0.065***(0.011) |
X Month + 6 | -0.042***(0.011) |
NK-Russia trade cities | |
X Month -3 | -0.017(0.016) |
X Month -2 | -0.033***(0.012) |
X Month -1 | -0.015(0.012) |
X Month + 1 | -0.061***(0.011) |
X Month + 2 | -0.106***(0.010) |
X Month + 3 | -0.135***(0.011) |
X Month + 4 | -0.105***(0.012) |
X Month + 5 | 0.000(0.013) |
X Month + 6 | -0.064***(0.014) |
Constant | 0.675***(0.002) |
Observations | 53,970 |
R-squared | 0.942 |