| lnpat | lnpat | lnpat | lnpat | |
| a1_dif0 | a1_dif1 | a1_sys0 | a1_sys1 | |
| L.lnpat | 0.459*** | 0.459*** | 0.703*** | 0.703*** |
-3.72 | -4.05 | -7.97 | -9.35 | |
| lnchar | -31.4 | -31.4 | -41.3 | -41.30* |
| (-1.20) | (-1.35) | (-1.59) | (-1.82) | |
| L.lnchar | 16.27 | 16.27 | 18.9 | 18.9 |
-0.73 | -1.06 | -0.72 | -1.16 | |
| lnchar2 | 2.749 | 2.749 | 3.64 | 3.640* |
-1.18 | -1.27 | -1.58 | -1.7 | |
| L.lnchar2 | -1.389 | -1.389 | -1.614 | -1.614 |
| (-0.68) | (-0.93) | (-0.67) | (-1.02) | |
| lnchar3 | -0.079 | -0.079 | -0.105 | -0.105 |
| (-1.15) | (-1.17) | (-1.56) | (-1.56) | |
| L.lnchar3 | 0.0401 | 0.0401 | 0.0468 | 0.0468 |
-0.65 | -0.83 | -0.63 | -0.91 | |
| lnmanage | -0.216 | -0.216 | -0.205 | -0.205 |
| (-0.95) | (-1.09) | (-1.08) | (-1.07) | |
| lnasset | 4.730*** | 4.730*** | 5.586*** | 5.586*** |
-5.95 | -5.62 | -7.08 | -6.38 | |
| lnedu | 0.125 | 0.125 | -0.307 | -0.307* |
-0.55 | -0.52 | (-1.54) | (-1.95) | |
| lncal | 0.0874 | 0.0874 | 0.271** | 0.271** |
-0.99 | -0.72 | -2.49 | -2.1 | |
| lnmark | -0.164 | -0.164 | -0.169 | -0.169 |
| (-1.53) | (-1.12) | (-1.46) | (-1.04) | |
| lnletter | -0.0216 | -0.0216 | -0.0305 | -0.0305 |
| (-0.48) | (-0.46) | (-0.66) | (-0.65) | |
| lnFDI | 0.0737 | 0.0737 | 0.0884 | 0.0884 |
-1.62 | -0.84 | -0.97 | -1.18 | |
| lnsoe | -3.769*** | -3.769*** | -3.176*** | -3.176*** |
| (-3.40) | (-3.80) | (-3.24) | (-3.35) | |
| lnenergyc | 0.901 | 0.901 | 1.484 | 1.484* |
-0.79 | -1.05 | -1.6 | -1.83 | |
| _cons | 54.92 | 54.92 | 82.84** | 82.84 |
-1.3 | -0.99 | -2.37 | -1.58 | |
| N | 207 | 207 | 237 | 237 |
| adj. R-sq | ||||
| t statistics in parentheses | ||||
| ="* p<0.1 | ** p<0.05 | *** p<0.01" | ||


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