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

  SRV: PHYS |
THER-ONSITE |
       -NON |
   RESIDENT |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      7,657       76.57       76.57
          N |      2,233       22.33       98.90
          Y |        110        1.10      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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