Frequencies for first 10,000 rows of prov2140 variable in pos1992 dataset :

       srv: |
  emergency |
services(or |
   ganized) |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      8,851       88.51       88.51
          0 |        236        2.36       90.87
          1 |        701        7.01       97.88
          2 |        108        1.08       98.96
          3 |        104        1.04      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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