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

  RESTRAINT |
 SYSTEM USE |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      4,595       45.95       45.95
          1 |         55        0.55       46.50
          2 |        432        4.32       50.82
          3 |      3,413       34.13       84.95
          4 |        136        1.36       86.31
          5 |        122        1.22       87.53
          6 |         10        0.10       87.63
          8 |        109        1.09       88.72
         13 |         22        0.22       88.94
         14 |         11        0.11       89.05
         15 |          3        0.03       89.08
         99 |      1,092       10.92      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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