Frequencies for first 10,000 rows of dntl_srvc_cd variable in pos2018 dataset :

  Services: |
Dental Code |      Freq.     Percent        Cum.
------------+-----------------------------------
          . |      8,560       85.60       85.60
          0 |      1,088       10.88       96.48
          1 |        134        1.34       97.82
          2 |        183        1.83       99.65
          3 |         35        0.35      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 15 Feb 2019