Frequencies for first 10,000 rows of birattnd variable in natlterr1999 dataset :

  Attendant |
   at birth |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |      9,978       99.78       99.78
          4 |          1        0.01       99.79
          5 |          8        0.08       99.87
          9 |         13        0.13      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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