Frequencies for first 10,000 rows of birattnd variable in natl1974 dataset :

  Attendant |
   at birth |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |      9,594       95.94       95.94
          2 |        148        1.48       97.42
          3 |        254        2.54       99.96
          4 |          4        0.04      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 3 Jan 2016