how could the difference of number of a variable in a panel data be shown in stata

[yiwen song]

hello,
i want to see how many people' living status(dummy variable) have been changed using a 2-period panel data?
what command should i use?

thank you

[Carlo Lazzaro]

Yiwen:
welcome to this forum.
You may want to consider something along the following lines:

. use "https://www.stata-press.com/data/r17/nlswork.dta"
(National Longitudinal Survey of Young Women, 14-24 years old in 1968)

. xttrans msp if year<=69, freq

      1 if |
  married, | 1 if married, spouse
    spouse |        present
   present |         0          1 |     Total
-----------+----------------------+----------
         0 |       396        105 |       501
           |     79.04      20.96 |    100.00
-----------+----------------------+----------
         1 |        30        320 |       350
           |      8.57      91.43 |    100.00
-----------+----------------------+----------
     Total |       426        425 |       851
           |     50.06      49.94 |    100.00

.

See -xttab- entry, Stata .pdf manual for further details.

[yiwen song]

Mr. Lazzaro , thank you for your speedy answer!
problem's solved by using the code you suggested.