Research Article
IT Usage and Innovation Performance of SMEs in China: A New Perspective
Table 3
Results of robustness check.
| | Variables | IP (OLS) | Flexibility (logit) | | Model 8 | Model 9 | Model 10 | Model 11 | Model 12 |
| | ITW | 0.503 (0.171) | 0.485 (0.169) | 0.471 (0.170) | 0.514 (0.171) | 0.007 (0.082) | | ITF | 0.541 (0.246) | 0.431 (0.253) | 0.425 (0.252) | 0.422 (0.252) | 0.790 (0.114) | | Flexibility | | 0.927 (0.444) | 0.956 (0.443) | 0.938 (0.442) | | | Human | | | 0.103 (0.111) | 0.089 (0.110) | | | ITW × Human | | | | 0.173 (0.102) | | | ITF × Human | | | | −0.092 (0.130) | | | Constant | −0.618 (1.611) | −0.773 (1.608) | −1.608 (1.830) | −1.725 (1.829) | −1.183 (0.954) | | Control variables | Controlled | Controlled | Controlled | Controlled | Controlled | | Industry-fixed effect | Controlled | Controlled | Controlled | Controlled | Controlled | | City-fixed effect | Controlled | Controlled | Controlled | Controlled | Controlled | | R2/pseudo R2 | 0.436 | 0.439 | 0.439 | 0.440 | 0.334 | | F | 41.05 | 40.57 | 39.82 | 38.75 | — | | Wald chi2 | — | — | — | — | 367.91 | | N | 1312 | 1312 | 1312 | 1312 | 1308 |
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