Frequencies for first 10,000 rows of ld_anes variable in natlterr2010 dataset :

 Anesthesia |
        RFP |
616=f_ld_an |
     esth R |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      4,656       46.56       46.56
          N |      3,697       36.97       83.53
          U |        849        8.49       92.02
          Y |        798        7.98      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 22 Dec 2015