Frequencies for first 10,000 rows of prov2505 variable in pos1997 dataset :

srv: speech |
  pathology |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      8,295       82.95       82.95
          0 |        380        3.80       86.75
          1 |        405        4.05       90.80
          2 |        886        8.86       99.66
          3 |         34        0.34      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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