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

  Services: |
   PET Scan |
       Code |      Freq.     Percent        Cum.
------------+-----------------------------------
          . |      8,569       85.69       85.69
          0 |      1,279       12.79       98.48
          1 |         55        0.55       99.03
          2 |         73        0.73       99.76
          3 |         24        0.24      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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