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

  Services: |
 Laboratory |
       Code |      Freq.     Percent        Cum.
------------+-----------------------------------
          . |      8,470       84.70       84.70
          0 |        994        9.94       94.64
          1 |         67        0.67       95.31
          2 |        387        3.87       99.18
          3 |         81        0.81       99.99
          4 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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