Research Article
Digital Economy’s Spatial Implications on Urban Innovation and Its Threshold: Evidence from China
Table 10
Spatial spillover distance of the digital economy on urban innovation.
| | Distance threshold (km) | Direct effect | Indirect effect | Distance threshold (km) | Direct effect | Indirect effect | | Coefficient | t-statistic | Coefficient | t-statistic | Coefficient | t-statistic | Coefficient | t-statistic |
| | 50 | 1.236∗∗∗ | (6.60) | 8.814∗∗∗ | (3.55) | 1050 | 1.605∗∗∗ | (8.08) | −13.719∗∗∗ | (−5.12) | | 100 | 1.196∗∗∗ | (6.14) | 23.590∗∗∗ | (3.11) | 1100 | 1.732∗∗∗ | (8.68) | −14.941∗∗∗ | (−5.46) | | 150 | 1.119∗∗∗ | (5.62) | 25.373∗∗ | (2.25) | 1150 | 1.753∗∗∗ | (8.79) | −14.937∗∗∗ | (−5.97) | | 200 | 1.005∗∗∗ | (4.94) | 25.018∗∗ | (2.46) | 1200 | 1.778∗∗∗ | (8.86) | −15.720∗∗∗ | (−6.41) | | 250 | 1.075∗∗∗ | (5.29) | 25.246∗∗∗ | (2.92) | 1250 | 1.823∗∗∗ | (9.07) | −14.624∗∗∗ | (−5.55) | | 300 | 1.235∗∗∗ | (6.02) | 30.410∗∗∗ | (2.87) | 1300 | 1.884∗∗∗ | (9.30) | −12.793∗∗∗ | (−5.12) | | 350 | 1.280∗∗∗ | (6.24) | 31.194∗∗∗ | (2.86) | 1350 | 1.864∗∗∗ | (9.20) | −12.028∗∗∗ | (−5.36) | | 400 | 1.391∗∗∗ | (6.72) | 33.692∗∗∗ | (2.85) | 1400 | 1.759∗∗∗ | (8.66) | −10.877∗∗∗ | (−5.48) | | 450 | 1.460∗∗∗ | (7.10) | 17.557∗∗ | (2.49) | 1450 | 1.802∗∗∗ | (8.92) | −9.590∗∗∗ | (−4.66) | | 500 | 1.391∗∗∗ | (6.78) | 9.572∗ | (1.75) | 1500 | 1.739∗∗∗ | (8.56) | −6.770∗∗∗ | (−3.66) | | 550 | 1.465∗∗∗ | (7.15) | 0.087 | (0.02) | 1550 | 1.655∗∗∗ | (8.13) | −3.377∗ | (−1.94) | | 600 | 1.453∗∗∗ | (7.16) | −10.970∗∗ | (−2.51) | 1600 | 1.536∗∗∗ | (7.54) | −0.801 | (−0.51) | | 650 | 1.525∗∗∗ | (7.60) | −14.189∗∗∗ | (−3.50) | 1650 | 1.406∗∗∗ | (6.92) | 1.922 | (1.30) | | 700 | 1.487∗∗∗ | (7.46) | −14.165∗∗∗ | (−4.50) | 1700 | 1.389∗∗∗ | (6.86) | 2.196 | (1.62) | | 750 | 1.509∗∗∗ | (7.59) | −14.920∗∗∗ | (−4.61) | 1750 | 1.486∗∗∗ | (7.41) | 2.985∗∗ | (2.29) | | 800 | 1.516∗∗∗ | (7.59) | −15.817∗∗∗ | (−4.79) | 1800 | 1.517∗∗∗ | (7.66) | 3.560∗∗∗ | (2.96) | | 850 | 1.373∗∗∗ | (6.88) | −14.943∗∗∗ | (−5.27) | 1850 | 1.566∗∗∗ | (8.02) | 3.392∗∗∗ | (3.02) | | 900 | 1.441∗∗∗ | (7.22) | −14.397∗∗∗ | (−5.36) | 1900 | 1.603∗∗∗ | (8.24) | 2.985∗∗∗ | (2.74) | | 950 | 1.509∗∗∗ | (7.58) | −14.771∗∗∗ | (−5.28) | 1950 | 1.551∗∗∗ | (8.05) | 3.540∗∗∗ | (3.50) | | 1000 | 1.536∗∗∗ | (7.73) | −13.766∗∗∗ | (−5.18) | 2000 | 1.587∗∗∗ | (8.18) | 1.960∗∗ | (2.02) |
|
|
Note. ∗∗∗, ∗∗, and ∗ represent the significance level at the 1%, 5%, and 10% levels, respectively. The numbers in brackets are the test values t.
|
