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

  Services: |
   Clinical |
 Laboratory |
       Code |      Freq.     Percent        Cum.
------------+-----------------------------------
          . |      8,560       85.60       85.60
          0 |         49        0.49       86.09
          1 |        879        8.79       94.88
          2 |        297        2.97       97.85
          3 |        215        2.15      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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