Frequencies for first 10,000 rows of prov2140 variable in pos2010 dataset :

       SRV: |
  EMERGENCY |
   SERVICES |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      8,626       86.26       86.26
          0 |        402        4.02       90.28
          1 |        659        6.59       96.87
          2 |        146        1.46       98.33
          3 |        167        1.67      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 17 May 2017