Frequencies for first 10,000 rows of EKG_SRVC_CD variable in pos2011 dataset :

   Service: |
        EKG |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,621       96.21       96.21
          0 |         25        0.25       96.46
          1 |        132        1.32       97.78
          2 |        217        2.17       99.95
          3 |          5        0.05      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 19 Apr 2019