Frequencies for first 10,000 rows of ct_scan_srvc_cd variable in pos2016 dataset :

  Services: |
    CT Scan |
       Code |      Freq.     Percent        Cum.
------------+-----------------------------------
          . |      8,569       85.69       85.69
          0 |        894        8.94       94.63
          1 |        415        4.15       98.78
          2 |         76        0.76       99.54
          3 |         46        0.46      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 10 Jan 2017