Frequencies for first 10,000 rows of prov2140 variable in pos1996 dataset :

       srv: |
  emergency |
services(or |
   ganized) |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      8,803       88.03       88.03
          0 |        260        2.60       90.63
          1 |        689        6.89       97.52
          2 |        135        1.35       98.87
          3 |        113        1.13      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 26 Jan 2016