paneltests (version 1.0.5)
Panel Data Pre-Testing and Diagnostic Suite
Description
Pre-testing and diagnostic tools for panel data analysis.
Researchers should run these tests before any panel regression to
verify modelling assumptions. The package implements: (1) the Hsiao
(2014, ) homogeneity F-tests (F1/F2/F3),
Swamy (1970) parameter heterogeneity test, and
Pesaran (2004) cross-sectional dependence
test via xtpretest(); (2) missing-data detection, mechanism testing,
and imputation for unbalanced panels via xtmispanel(); (3)
quantile-regression cross-sectional dependence tests (T_tau and
T-tilde_tau statistics) of Demetrescu, Hosseinkouchack and Rodrigues
(2023) via xtcsdq(); and (4) the
panel quantile-regression slope homogeneity S-hat and D-hat
statistics of Galvao, Juhl, Montes-Rojas and Olmo (2017)
via xtqsh(). Together these
tests address three fundamental pre-testing questions: (i) are
slopes homogeneous? (ii) is there cross-sectional dependence? and
(iii) is the panel balanced and is missingness ignorable?