Frequencies for first 10,000 rows of therpr2 variable in nhamcsopd1997 dataset :

      other |
therapeutic |
/preventive |
 service #2 |      Freq.     Percent        Cum.
------------+-----------------------------------
       0000 |      9,964       99.64       99.64
       4921 |          1        0.01       99.65
       8623 |          1        0.01       99.66
       8628 |          1        0.01       99.67
       863- |          1        0.01       99.68
       8659 |          1        0.01       99.69
       8939 |          1        0.01       99.70
       9094 |          1        0.01       99.71
       9357 |          1        0.01       99.72
       9362 |          1        0.01       99.73
       9375 |          1        0.01       99.74
       9408 |          1        0.01       99.75
       9449 |         14        0.14       99.89
       9511 |          1        0.01       99.90
       9531 |          3        0.03       99.93
       9604 |          1        0.01       99.94
       9652 |          2        0.02       99.96
       9657 |          1        0.01       99.97
       9789 |          1        0.01       99.98
       9941 |          1        0.01       99.99
       9952 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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