Frequencies for first 10,000 rows of physn_ext_srvc_onst_rsdnt_sw variable in pos2018 dataset :

  Services: |
  Physician |
   Extender |
    On-Site |
    Residen |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      7,570       75.70       75.70
          N |      1,874       18.74       94.44
          Y |        556        5.56      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 15 Feb 2019