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

       SRV: |
   CLINICAL |
LAB-ONSITE- |
  RESIDENTS |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      7,657       76.57       76.57
          N |        520        5.20       81.77
          Y |      1,823       18.23      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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