Frequencies for first 10,000 rows of tobuse variable in linkpe2009psden dataset :

Tobacco Use |
 U (f_tobac |
  rep flag) |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |        307        3.07        3.07
          2 |      3,083       30.83       33.90
          9 |         32        0.32       34.22
          . |      6,578       65.78      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 22 Dec 2015