Frequencies for first 10,000 rows of prov2520 variable in pos2010 dataset :

SRV: SPEECH |
    THERAPY |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      8,318       83.18       83.18
          0 |        337        3.37       86.55
          1 |        451        4.51       91.06
          2 |        691        6.91       97.97
          3 |        203        2.03      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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