Table 4.
Results of the regression analyses
| Variables | Regression models | ||||||
|---|---|---|---|---|---|---|---|
| Negative binomial | Tobit | Negative binomial | Tobit | Tobit | Tobit | Tobit | |
| h-index | m-quotient | g-index | Individual h-index | Age-weighted citation rate | e-index | Contemporary h-index | |
| Coefficient | Coefficient | Coefficient | Coefficient | Coefficient | Coefficient | Coefficient | |
| REFLX | −0.54*** | −0.15*** | −0.57*** | −1.94*** | −46.68*** | −6.53*** | −1.54*** |
| QUALI | −0.31** | −0.11** | −0.29** | −1.02 | −36.74** | −4.99** | −0.72 |
| MIXME | −0.32*** | −0.17*** | −0.34*** | −1.36** | −38.24*** | −4.49** | −0.70 |
| POSIT | 0.15** | 0.07*** | 0.18** | 0.69* | 6.54 | 1.44 | −0.17 |
| SSHRC | 0.19*** | 0.09*** | 0.28*** | 1.08*** | 28.02*** | 3.51*** | 0.35 |
| PERIU | −0.84*** | −0.21*** | −0.85*** | −4.00*** | −65.71*** | −10.50*** | 0.44 |
| ANTHR | −0.68*** | −0.22*** | −0.80*** | −2.02** | −61.12*** | −9.57*** | 0.89 |
| SOCIO | −0.64*** | −0.22*** | −0.76*** | −2.91*** | −76.56*** | −10.44*** | 0.87 |
| SOCWO | −0.70*** | −0.17*** | −0.85*** | −2.08** | −40.31** | −7.79*** | 0.34 |
| POLSC | −0.41*** | −0.15*** | −0.46*** | −1.30* | −48.92*** | −7.87*** | 0.33 |
| ECON | −0.28*** | −0.07* | −0.18 | −0.57 | −30.04** | −2.98 | 1.32*** |
| ASSO | −0.57*** | 0.00 | −0.57*** | −3.59*** | −48.58*** | −6.94*** | −0.63* |
| ASSI | −0.91*** | −0.02 | −0.94*** | −4.33*** | −41.79*** | −7.88*** | −0.26 |
| GENDER | 0.03 | −0.06* | 0.03 | 0.37 | 12.50 | 1.51 | 0.46 |
| Constant | 2.21**** | 0.39*** | 2.72*** | 5.99*** | 79.19** | 15.42*** | 3.81*** |
*** significant at 1% level, ** at 5%, * at 10%, two-tailed test