方法对比
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| 面板固定效应模型× | 固定效应模型× | |
|---|---|---|
| 领域 | 计量经济学 | 计量经济学 |
| 方法族 | Regression model | Regression model |
| 起源年份≠ | 1978 | 1971–1978 |
| 提出者≠ | Mundlak (1978); classical treatment in Wooldridge (2010) and Baltagi (2021) | Mundlak (1978); Nerlove (1971); classical panel econometrics |
| 类型 | Panel regression estimator | Panel regression estimator |
| 开创性文献≠ | Wooldridge, J. M. (2010). Econometric Analysis of Cross Section and Panel Data (2nd ed.). MIT Press. ISBN: 978-0262232586 | Baltagi, B. H. (2021). Econometric Analysis of Panel Data (6th ed.). Springer. ISBN: 978-3030538002 |
| 别名 | within estimator, FE model, within-group estimator, LSDV model | FE model, within estimator, least squares dummy variable, LSDV regression |
| 相关 | 5 | 5 |
| 摘要≠ | The panel fixed effects (FE) model controls for all time-invariant, unit-specific unobserved heterogeneity by absorbing it into individual intercepts. By sweeping out unit means through the within transformation, FE yields unbiased estimates of the effect of time-varying regressors even when omitted unit-level confounders are correlated with those regressors. | The fixed effects (FE) model is the workhorse estimator for panel data when unobserved unit-specific characteristics are suspected to correlate with the regressors. By absorbing each entity's time-invariant heterogeneity into a separate intercept, FE isolates the causal effect of within-unit variation and eliminates omitted-variable bias from time-constant confounders. |
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