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

  RESTRAINT |
 SYSTEM USE |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      3,842       38.42       38.42
          1 |         36        0.36       38.78
          2 |        179        1.79       40.57
          3 |      4,412       44.12       84.69
          4 |        190        1.90       86.59
          5 |        236        2.36       88.95
          6 |         19        0.19       89.14
          8 |         28        0.28       89.42
         13 |         12        0.12       89.54
         14 |          5        0.05       89.59
         15 |          7        0.07       89.66
         99 |      1,034       10.34      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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