Frequencies for first 10,000 rows of birattnd variable in natlterr1994 dataset :

  Attendant |
   at birth |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |      9,976       99.76       99.76
          4 |          1        0.01       99.77
          5 |         12        0.12       99.89
          9 |         11        0.11      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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