Frequencies for first 10,000 rows of birattnd variable in natl1975 dataset :

  Attendant |
   at birth |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |      9,714       97.14       97.14
          2 |         30        0.30       97.44
          3 |        241        2.41       99.85
          4 |         15        0.15      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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