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

  RESTRAINT |
 SYSTEM USE |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      4,372       43.72       43.72
          1 |         86        0.86       44.58
          2 |        325        3.25       47.83
          3 |      3,870       38.70       86.53
          4 |        121        1.21       87.74
          5 |        153        1.53       89.27
          6 |          3        0.03       89.30
          8 |         38        0.38       89.68
         13 |         14        0.14       89.82
         14 |         15        0.15       89.97
         15 |          8        0.08       90.05
         99 |        995        9.95      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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