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

       SRV: |
PHYSICIAN-O |
  NSITE-NON |
   RESIDENT |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      7,641       76.41       76.41
          N |      2,297       22.97       99.38
          Y |         62        0.62      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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