Frequencies for first 10,000 rows of prov3495 variable in pos2010 dataset :

       SRV: |
   CLINICAL |
LAB-OFFSITE |
  -RESIDENT |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      7,641       76.41       76.41
          N |      1,750       17.50       93.91
          Y |        609        6.09      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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