stata中各类回归的help文件中都会有这次回归所保存的结果,如:
Scalars
e(N) number of observations
e(N_g) number of groups
e(df_m) model degrees of freedom
e(g_min) smallest group size
e(g_avg) average group size
e(g_max) largest group size
e(Tcon) 1 if T is constant
e(sigma) ancillary parameter (gamma, lnormal)
e(sigma_u) panel-level standard deviation
e(sigma_e) standard deviation of epsilon_it
e(r2_w) R-squared within model
e(r2_o) R-squared overall model
e(r2_b) R-squared between model
e(N_clust) number of clusters
e(chi2) chi-squared
e(p) significance
e(rho) rho
e(thta_min) minimum theta
e(thta_5) theta, 5th percentile
e(thta_50) theta, 50th percentile
e(thta_95) theta, 95th percentile
e(thta_max) maximum theta
e(rmse) root mean squared error of GLS regression
e(Tbar) harmonic mean of group sizes
e(rank) rank of e(V)
Macros
e(cmd) xtreg
e(cmdline) command as typed
e(depvar) name of dependent variable
e(ivar) variable denoting groups
e(model) re
e(clustvar) name of cluster variable
e(chi2type) Wald; type of model chi-squared test
e(vce) vcetype specified in vce()
e(vcetype) title used to label Std. Err.
e(sa) Swamy-Arora estimator of the variance components (sa only)
e(properties) b V
e(predict) program used to implement predict
e(marginsnotok) predictions disallowed by margins
e(asbalanced) factor variables fvset as asbalanced
e(asobserved) factor variables fvset as asobserved
Matrices
e(b) coefficient vector
e(bf) coefficient vector for fixed-effects model
e(theta) theta
e(V) variance-covariance matrix of the estimators
e(VCEf) VCE for fixed-effects model
Functions
e(sample) marks estimation sample
我比较有疑惑的地方时,在e(b)或e(bf)里所保存的系数矩阵与我们的回归结果中显示的各个系数是一样的吗?