Frequencies for first 10,000 rows of dntl_srvc_cd variable in pos2017 dataset :

  Services: |
Dental Code |      Freq.     Percent        Cum.
------------+-----------------------------------
          . |      8,569       85.69       85.69
          0 |      1,078       10.78       96.47
          1 |        140        1.40       97.87
          2 |        178        1.78       99.65
          3 |         35        0.35      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 9 Jan 2018