Frequencies for first 10,000 rows of me_trial variable in natlterr2007 dataset :

   Trial of |
      Labor |
  Attempted |
        RFP |
621=f_md_tr |
      ial R |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      6,163       61.63       61.63
          N |          1        0.01       61.64
          U |      1,347       13.47       75.11
          X |      1,976       19.76       94.87
          Y |        513        5.13      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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