Frequencies for first 10,000 rows of birattnd variable in natl1985 dataset :

  Attendant |
   at birth |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |      9,937       99.37       99.37
          2 |         30        0.30       99.67
          4 |         33        0.33      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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