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

   Trial of |
      Labor |
  Attempted |
        RFP |
621=f_md_tr |
      ial R |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      4,656       46.56       46.56
          N |        995        9.95       56.51
          U |        117        1.17       57.68
          X |      3,183       31.83       89.51
          Y |      1,049       10.49      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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