Frequencies for first 10,000 rows of birattnd variable in natl1983 dataset :

  Attendant |
   at birth |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |      9,915       99.15       99.15
          2 |         26        0.26       99.41
          3 |         38        0.38       99.79
          4 |         21        0.21      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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