Frequencies for first 10,000 rows of me_trial variable in natlterr2011 dataset :

   Trial of |
      Labor |
  Attempted |
        RFP |
621=f_md_tr |
      ial R |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      2,536       25.36       25.36
          N |        851        8.51       33.87
          U |      1,588       15.88       49.75
          X |      3,925       39.25       89.00
          Y |      1,100       11.00      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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