help xttab, help xttrans dialogs: xttab xttrans
-------------------------------------------------------------------------------
Title
[XT] xttab -- Tabulate xt data
Syntax
xttab varname [if]
xttrans varname [if] [, freq]
A panel variable must be specified; use xtset.
by is allowed with xttab and xttrans; see [D] by.
Menu
xttab
Statistics > Longitudinal/panel data > Setup and utilities > Tabulate
xt data
xttrans
Statistics > Longitudinal/panel data > Setup and utilities > Report
transition probabilities
Description
xttab, a generalization of tabulate, performs one-way tabulations and
decomposes counts into between and within components in cross-sectional
time-series (xt) data.
xttrans, another generalization of tabulate, reports transition
probabilities (the change in one categorical variable over time).
Option
+------+
----+ Main +-------------------------------------------------------------
freq, allowed with xttrans only, specifies that frequencies as well as
transition probabilities be displayed.
Examples
Setup
. webuse nlswork
. xtset id year
xttab
. xttab msp
. xttab race
xttrans
. xttrans msp
. xttrans msp, freq
Saved results
xttab saves the following in r():
Scalars
r(n) number of panels
Matrices
r(results) results matrix
Also see
Manual: [XT] xttab
Help: [XT] xtdescribe, [XT] xtsum
