Frequencies for first 10,000 rows of prov3440 variable in pos2009 dataset :

       SRV: |
PODIATRY-ON |
SITE-RESIDE |
        NTS |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      7,657       76.57       76.57
          N |        741        7.41       83.98
          Y |      1,602       16.02      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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