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

  RESTRAINT |
 SYSTEM USE |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      4,228       42.28       42.28
          1 |         88        0.88       43.16
          2 |        352        3.52       46.68
          3 |      3,868       38.68       85.36
          4 |        156        1.56       86.92
          5 |        168        1.68       88.60
          6 |          6        0.06       88.66
          8 |         34        0.34       89.00
         13 |         25        0.25       89.25
         14 |         11        0.11       89.36
         15 |          9        0.09       89.45
         99 |      1,055       10.55      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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