| Model | (1) | (2) | (3) | ||||
| Parameters (z-values) | χ2 (p-values) | Parameters (z-values) | χ2 (p-values) | Parameters (z-values) | χ2 (p-values) | ||
| Constant term | −53.081 (−1.30) |
| −51.437 (−1.30) |
| −59.069 (−1.51) |
| |
| Author is an economist | 1.173 (1.14) | 13.55** (0.001) | 1.910** (3.16) |
|
|
| |
| Author is not an economist | −1.042 (−1.02) |
| −1.937*** (−3.35) | ||||
| Economics Journal | 0.346 (0.47) | 0.24 (8.885) | 0.550 (0.81) | 1.14 (0.566) | 0.384 (0.51) | 0.31 (0.856) | |
| Non-Economics Journal | 0.188 (0.28) | 0.121 (0.19) | 0.180 (0.26) | ||||
| Time Series Data | −0.236 (−0.40) | 4.22 (0.121) | −0.172 (−0.31) | 2.85 (0.240) | −0.355 (−0.57) | 4.33 (0.114) | |
| Cross-sectional data | −0.941* (−2.05) | −0.830(*) (−1.66) | −0.882* (−2.08) | ||||
| OLS | −0.346 (−0.59) | 1.24 (0.743) | −0.400 (−0.68) | 1.17 (0.761) | −0.294 (−0.53) | 1.11 (0.775) | |
| Advanced estimation methods | −0.282 (−0.68) | −0.279 (−0.68) | −0.263 (−0.66) | ||||
| Weighted regressions | 0.334 (0.79) | 0.270 (0.65) | 0.324 (0.76) | ||||
| Data from the U.S. | 0.966 (1.43) |
| 0.833 (1.22) |
| 0.923 (1.40) |
| |
| Publication year | 0.027 (1.27) |
| 0.025 (1.26) |
| 0.030 (1.52) |
| |
| Unemployment rate included | 0.088 (0.22) | 1.59 (0.453) | 0.042 (0.11) | 1.63 (0.444) | 0.140 (0.37) | 1.09 (0.581) | |
| Growth rate of real income included | −0.563 (−1.26) | −0.566 (−1.27) | −0.444 (−1.03) | ||||
| Overall Wald test | 10.26 (0.508) | 10.15 (0.517) | 10.94 (0.448) | ||||
| Pseudo R2 | 0.373 |
| 0.362 |
| 0.359 |
| |
| Standard error of the regression | 0.404 |
| 0.404 |
| 0.402 |
| |
| Log of the pseudo-likelihood function | −38.851 |
| −39.588 |
| −39.755 |
| |
| Hannan-Quinn criteron | 1.304 |
| 1.304 |
| 1.291 |
| |