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

  RESTRAINT |
 SYSTEM USE |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      5,700       57.00       57.00
          1 |         59        0.59       57.59
          2 |        411        4.11       61.70
          3 |      1,908       19.08       80.78
          4 |         80        0.80       81.58
          5 |        138        1.38       82.96
          8 |        626        6.26       89.22
          9 |      1,078       10.78      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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