Frequencies for first 10,000 rows of cl_srvc_onst_rsdnt_sw variable in pos1996 dataset :

       srv: |
   clinical |
lab-onsite- |
  residents |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      7,254       72.54       72.54
          N |        552        5.52       78.06
          Y |      2,194       21.94      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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