Frequencies for first 10,000 rows of birattnd variable in natl1973 dataset :

  Attendant |
   at birth |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |      9,700       97.00       97.00
          2 |         26        0.26       97.26
          3 |        256        2.56       99.82
          4 |         18        0.18      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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