Frequencies for first 10,000 rows of prov2505 variable in pos1999 dataset :

srv: speech |
  pathology |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      8,390       83.90       83.90
          0 |        384        3.84       87.74
          1 |        368        3.68       91.42
          2 |        824        8.24       99.66
          3 |         34        0.34      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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