Frequencies for first 10,000 rows of prov2520 variable in pos2009 dataset :

SRV: SPEECH |
    THERAPY |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      8,205       82.05       82.05
          0 |        353        3.53       85.58
          1 |        454        4.54       90.12
          2 |        763        7.63       97.75
          3 |        225        2.25      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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