Table 7 Changes in the core explanatory variable’s coefficient with respect to the variation in bandwidths
Bandwidths |  ± 2 |  ± 3 |  ± 4 |  ± 5 |  ± 6 |  ± 7 |  ± 8 |  ± 9 |  ± 10 |
|---|---|---|---|---|---|---|---|---|---|
Coefficients | 0.808** | 0.734*** | 0.164** | 0.163** | 0.158 | 0.238* | 0.212* | 0.221** | 0.044 |
Clustering standard errors | − 0.261 | − 0.062 | − 0.069 | − 0.074 | − 0.133 | − 0.122 | − 0.104 | − 0.1 | − 0.087 |
Coef. lower limit | 0.219 | 0.595 | 0.008 | − 0.001 | − 0.126 | − 0.023 | − 0.008 | 0.01 | − 0.137 |
Coef. upper limit | 1.398 | 0.873 | 0.321 | 0.326 | 0.442 | 0.499 | 0.431 | 0.431 | 0.225 |