Frequencies for first 10,000 rows of uld_anest variable in natlterr2006 dataset :

 Anesthetic |
Complicatio |
     ns RFP |
724=f_uld_a |
     nest U |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |          1        0.01        0.01
          2 |      4,733       47.33       47.34
          9 |      1,541       15.41       62.75
          . |      3,725       37.25      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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