Frequencies for first 10,000 rows of birattnd variable in natl1969 dataset :

  Attendant |
   at birth |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |      9,052       90.52       90.52
          2 |        115        1.15       91.67
          3 |        787        7.87       99.54
          4 |         46        0.46      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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