Frequencies for first 10,000 rows of therpr2 variable in nhamcsopd1999 dataset :

      other |
therapeutic |
/preventive |
 service #2 |      Freq.     Percent        Cum.
------------+-----------------------------------
       0000 |      9,925       99.25       99.25
       3524 |          1        0.01       99.26
       4524 |          1        0.01       99.27
       5733 |          1        0.01       99.28
       8939 |          1        0.01       99.29
       9339 |          1        0.01       99.30
       9357 |         55        0.55       99.85
       9359 |         11        0.11       99.96
       9390 |          1        0.01       99.97
       9445 |          1        0.01       99.98
       9543 |          1        0.01       99.99
       9789 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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