Frequencies for first 10,000 rows of cl_srvc_onst_rsdnt_sw variable in pos2008 dataset :

       srv: |
   clinical |
lab-onsite- |
  residents |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      7,661       76.61       76.61
          N |        532        5.32       81.93
          Y |      1,807       18.07      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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