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

  RESTRAINT |
 SYSTEM USE |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      4,867       48.67       48.67
          1 |         84        0.84       49.51
          2 |        561        5.61       55.12
          3 |      3,067       30.67       85.79
          4 |        109        1.09       86.88
          5 |        147        1.47       88.35
          8 |        160        1.60       89.95
          9 |      1,005       10.05      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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