Research Article

Digital Economy’s Spatial Implications on Urban Innovation and Its Threshold: Evidence from China

Table 6

Results of instrumental variables estimation for impact of the digital economy on urban economy.

VariableUrban innovation
(1)(2)

2SLS two-stage regression results spatiallag term/space-time lag term2.856∗∗∗2.585∗∗∗
(8.33)(5.36)

Simplified result2.365∗∗∗2.061∗∗∗
(5.44)(3.56)

The first stage regression results0.828∗∗∗0.797∗∗∗
(21.96)(16.17)

Control variableYesYesYesYesYesYes
Individual-FEYesYesYesYesYesYes
N337033703370303330333033
Adj. R-sq0.6550.6920.9070.6020.6470.864
KP Wald-F statistic1055.908424.375

Note. ∗∗∗, ∗∗, and ∗ represent the significance level at the 1%, 5%, and 10% levels, respectively. The numbers in brackets are the test values t.