Frequencies for first 10,000 rows of prov3300 variable in pos2009 dataset :

  SRV: PHYS |
EXTENDER-OF |
FSITE-RESID |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      7,657       76.57       76.57
          N |      2,196       21.96       98.53
          Y |        147        1.47      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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