Frequencies for first 10,000 rows of birattnd variable in natl1982 dataset :

  Attendant |
   at birth |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |      9,878       98.78       98.78
          2 |         45        0.45       99.23
          3 |         49        0.49       99.72
          4 |         28        0.28      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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