Frequencies for first 10,000 rows of rest_use variable in person dataset :

  RESTRAINT |
 SYSTEM USE |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      5,109       51.09       51.09
          1 |         56        0.56       51.65
          2 |        420        4.20       55.85
          3 |      2,430       24.30       80.15
          4 |        116        1.16       81.31
          5 |        175        1.75       83.06
          8 |        671        6.71       89.77
          9 |      1,023       10.23      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 18 Apr 2016