Table 3 DID regression models between non-significant edge areas and hotspot areas
Exponentially-rising stage | Continuously-rising stage | Declining stage | |||||||
|---|---|---|---|---|---|---|---|---|---|
2002 | 2014 | 2015 | 2002 | 2014 | 2015 | 2002 | 2014 | 2015 | |
Intercept | 430.50*** (93.10) | 288.13*** (26.73) | 456.90*** (51.05) | 435.31*** (112.48) | 553.98*** (63.77) | 643.76*** (43.50) | 428.66*** (96.42) | 571.27*** (46.53) | 612.90*** (45.72) |
NON-SIG.EDGE | − 366.77^ (202.70) | − 180.48*** (48.78) | − 260.27*** (73.01) | − 284.63 (178.21) | − 294.42*** (81.44) | − 371.38*** (70.47) | − 285.89* (128.47) | − 195.56** (59.86) | − 135.13** (50.79) |
TIME* NON-SIG.EDGE (DID estimator) | 64.36 (221.46) | 156.37** (58.53) | 163.32* (71.20) | − 7.80 (79.78) | 248.40*** (70.10) | 442.54*** (76.44) | 34.65 (65.46) | − 56.52 (73.34) | − 56.74 (59.04) |
N | 36 | 96 | 85 | 52 | 106 | 93 | 57 | 119 | 140 |
ρ | 0.037 (0.0495) | 0.067** (0.0245) | 0.106*** (0.0293) | 0.098** (0.0339) | 0.100*** (0.0200) | 0.0217 (0.0357) | 0.088** (0.0340) | 0.123*** (0.0150) | 0.132*** (0.0139) |