Panel data econometrics in R:8 days ago
Introduction | The linear panel model | Software approach | Data structure | Interface | Estimation interface | Testing interface | Computational approach to estimation | The (quasi--)demeaning framework | The object-oriented approach to general GLS computations | Inference in the panel model | Managing data and formulae | Data transformation | Formulas | Model estimation | Estimation of the basic models with plm | More advanced use of plm | Random effects estimators | Introducing time or two-ways effects | Unbalanced panels | Instrumental variable estimators | Variable coefficients model | Generalized method of moments estimator | General FGLS models | Tests | Tests of poolability | Tests for individual and time effects | Hausman test | Tests of serial correlation | Unobserved effects test | Locally robust tests for serial correlation or random effects | Conditional LM test for AR(1) or MA(1) errors under random effects | General serial correlation tests | Wooldridge's test for serial correlation in "short" FE panels | Wooldridge's first-difference-based test | Tests for cross-sectional dependence | CD and LM-type tests for global cross-sectional dependence | CD(p) test for local cross-sectional dependence | Panel unit root tests | Overview of functions for panel unit root testing | Preliminary results | Levin-Lin-Chu model | Im-Pesaran-Shin (IPS) test | Simes' approach: intersecting hypotheses | Robust covariance matrix estimation | plm versus nlme and lme4 | Fundamental differences between the two approaches | Some false friends | A common taxonomy | The Laird-Ware representation for mixed models | Pooling and Within | Random effects | Variable coefficients, "random" | Variable coefficients, "within" | General FGLS | Some useful "econometric" models in nlme | AR(1) pooling or random effects panel | An LR test for serial correlation and one for random effects | Conclusions | Acknowledgments | Bibliography
