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

  Services: |
 Designated |
     Trauma |
Center Code |      Freq.     Percent        Cum.
------------+-----------------------------------
          . |      8,560       85.60       85.60
          0 |      1,247       12.47       98.07
          1 |        131        1.31       99.38
          2 |         22        0.22       99.60
          3 |         40        0.40      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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