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

  RESTRAINT |
 SYSTEM USE |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      4,431       44.31       44.31
          1 |         64        0.64       44.95
          2 |        399        3.99       48.94
          3 |      3,860       38.60       87.54
          4 |        140        1.40       88.94
          5 |        120        1.20       90.14
          6 |          1        0.01       90.15
          8 |         52        0.52       90.67
         13 |         13        0.13       90.80
         14 |         10        0.10       90.90
         15 |          3        0.03       90.93
         99 |        907        9.07      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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