Frequencies for first 10,000 rows of therpr2r variable in namcs1999 dataset :

      other |
  ther/prev |
 service #2 |
  - numeric |
     recode |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,985       99.85       99.85
       3780 |          1        0.01       99.86
       3893 |          1        0.01       99.87
       4466 |          1        0.01       99.88
       4524 |          1        0.01       99.89
       5732 |          1        0.01       99.90
       8619 |          1        0.01       99.91
       8944 |          2        0.02       99.93
       9357 |          1        0.01       99.94
       9445 |          1        0.01       99.95
       9446 |          1        0.01       99.96
       9503 |          1        0.01       99.97
       9639 |          1        0.01       99.98
       9658 |          1        0.01       99.99
       9784 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 28 Mar 2016