Frequencies for first 10,000 rows of birattnd variable in natl1972 dataset :

  Attendant |
   at birth |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |      9,575       95.75       95.75
          2 |         21        0.21       95.96
          3 |        384        3.84       99.80
          4 |         20        0.20      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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